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"It's cold outside. Remember to ………….. warm clothes."

 

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The longest fish in the contest _____ by Thelma Rivers.

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The Brain: Myths and Facts
There are a lot of myths about the human brain. We are going to tell you a little about these myths, and we are also going to give you the truth. One of the biggest myth is that we only use 10 percent of our brains. The next part of that myth is that if we can learn to use the rest of our brains, then we will be much smarter. People say this all the time, but it is absolutely not true. The truth is that although we don’t know everything about the human brain, we know that each part of it has an important function. Modern scientists call the “10 percent myth” ridiculous. The other most popular myth is about being “right brained” or “left brained”. According to this myth, people who use the right side of their brains tend to be more artistic and creative. People who use the left side of their brains tend to be better at maths and science. This myth is as popular as the 10 percent myth, and it is also wrong. In 2013, a study at an American university examined the right brain and left brain myth. According to the study, we use both sides of our brains equally. It is true that we use different parts of our brains for different things: We use our left side for language more, and our right side when we need to pay attention. But there is no evidence that creative people use the right side more, or that scientific people use the left side more. We have talked about myths, so let’s look at a few interesting facts about the brain. First of all, the brain feels no pain. Second, about 75 percent of the brain is made of water. It is also the fattest organ in your body. Another interesting fact about the brain is that around the time you turn 18 years old, it stops growing.
3. Which of the following is true about the human brain?

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions:
The human criterion for perfect vision is 20/20 for reading the standard lines on a Snellen eye chart without a hitch. The score is determined by how well you read lines of letters of different sizes from 20 feet away. But being able to read the bottom line on the eye chart does not approximate perfection as far as other species are concerned. Most birds would consider us very visually handicapped. The hawk, for instance, has such sharp eyes that it can spot a dime on the sidewalk while perched on top of the Empire State Building.
It can make fine visual distinctions because it is blessed with one million cones per square millimeter in its retina. And in water, humans are farsighted, while the kingfisher, swooping down to spear fish, can see well in both the air and water because it is endowed with two foveae - areas of the eye, consisting mostly of cones, that provide visual distinctions. One fovea permits the bird, while in the air, to scan the water below with one eye at a time. This is called monocular vision. Once it hits the water, the other fovea joins in, allowing the kingfisher to focus both eyes, like binoculars, on its prey at the same time.
A frog’s vision is distinguished by its ability to perceive things as a constant motion picture. Known as “bug detectors”, a highly developed set of cells in a frog’s eyes responds mainly to moving objects. So, it is said that a frog sitting in a field of dead bugs wouldn’t see them as food and would starve. The bee has a “compound” eye, which is used for navigation. It has 15,000 facets that divide what it sees into a pattern of dots, or mosaic. With this kind of vision, the bee sees the sun only as a single dot, a constant point of reference. Thus, the eye is a superb navigational instrument that constantly measures the angle of its line of flight in relation to the sun. A bee’s eye also gauges flight speed. And if that is not enough to leave our 20/20 “perfect vision” paling into insignificance, the bee is capable of seeing something we can’t - ultraviolet light.
Thus, what humans consider to be “perfect vision” is in fact rather limited when we look at other species. However, there is still much to be said for the human eye. Of all the mammals, only humans and some primates can enjoy the pleasures of color vision.

The phrase “without a hitch”  is closet meaning to     .

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Carbohydrates, which are sugars, are an essential part of a healthy diet. They provide the main source of energy for the body, and they also function to flavor and sweeten foods. Carbohydrates range from simple sugars like glucose to complex sugars such as amylose and amylopectin. Nutritionists estimate that carbohydrates should make up about one-fourth to one-fifth of a person's diet. This translates to about 75- 100 grams of carbohydrates per day. A diet that is deficient in carbohydrates can have an adverse effect on a person's health. When the body lacks a sufficient amount of carbohydrates it must then use its protein supplies for energy, a process called gluconeogenesis. This, however, results in a lack of necessary protein, and further health difficulties may occur. A lack of carbohydrates can also lead to ketosis, a buildup of ketones in the body that causes fatigue, lethargy, and bad breath.
3. The word "range" as used is closest in meaning to which of the following?

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Although only a small percentage of the electromagnetic radiation that is emitted by the Sun is ultraviolet (UV) radiation, the amount that is emitted would be enough to cause severe damage to most forms of life on Earth were it all to reach the surface of the Earth. Fortunately, all of the Sun’s ultraviolet radiation does not reach the Earth because of a layer of oxygen, called the ozone layer encircling the Earth in the stratosphere at an altitude of about 15 miles above the Earth. The ozone layer absorbs much of the Sun’s ultraviolet radiation and prevents it from reaching the Earth. Ozone is a form of oxygen in which each molecule consists of three atoms (O3) instead of the two atoms (O2) usually found in an oxygen molecule. Ozone forms in the stratosphere in a process that is initiated by ultraviolet radiation from the Sun. UV radiation from the Sun splits oxygen molecules with two atoms into free oxygen atoms, and each of these unattached oxygen atoms then joins up with an oxygen molecule to form ozone. UV radiation is also capable of splitting up ozone molecules; thus, ozone is constantly forming, splitting, and reforming in the stratosphere. When UV radiation is absorbed during the process of ozone formation and reformation, it is unable to reach Earth and cause damage there. Recently, however, the ozone layer over parts of the Earth has been diminishing. Chief among the culprits in the case of the disappearing ozone, those that are really responsible, are the chlorofluorocarbons (CFCs). CFCs meander up from Earth into the stratosphere, where they break down and release chlorine. The released chlorine reacts with ozone in the stratosphere to form chlorine monoxide (ClO) and oxygen (O2). The chlorine then becomes free to go through the cycle over and over again. One chlorine atom can, in fact, destroy hundreds of thousands of ozone molecules in this repetitious cycle, and the effects of this destructive process are now becoming evident.
9. According to the passage, what happens after a chlorine molecule reacts with an ozone molecule?

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Any change in one part of an ecosystem can cause changes in other parts. Droughts, storms and fires can change ecosystems. Some changes (1) _______ ecosystems. If there is too (2) _______ rainfall, plants will not have enough water to live. If a kind of plant dies off, the animals that feed on it may also die or move away. Some changes are good for ecosystems. Some pine forests need fires for he pine trees to reproduce. The seeds are sealed inside pinecones. Heat from a forest fire melts the seal and lets the seeds (3) _______. Polluting the air, soil, and water can harm ecosystems. Building (4) _______ on rivers for electric power and irrigation can harm ecosystems around the rivers. Bulldozing wetlands and cutting down forests destroy ecosystems. Ecologists are working with companies and governments to find better ways of (5) _______ fish, cutting down trees, and building dams. They are looking for ways to get food, lumber, and other products for people without causing harm to ecosystems

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Microtrends: It’s a Small World After All
In today’s world, it seems like everyone is focused on “the big picture”. However, coming up with large-scale solutions is not always what is needed. Sometimes it pays to think small – and that is exactly what many people are doing these days. By thinking small, lots of big minds have created some pretty amazing things. One example of this is microloans. Microloans are tiny loans, in some cases just a few dollars, which are available to people in developing countries. Although this may not seem like a lot of money, microloans can help workers to escape poverty and start their own businesses. The person behind the modern microloan movement is a Bangladeshi man named Muhammad Yunus. He started the project in the 1970s by offering villagers low-interest loans using his own money. Yunus wanted to offer poor people access to small loans so they wouldn’t be forced to turn to gangsters if they needed funds. In 1983, he founded the Grameen Bank and soon after, similar organizations started popping up around the globe. Although there are still some issues with microloans, at the very least they offer everyone the potential of becoming an entrepreneur. For most of the 20th century, companies required large sums of money and plenty of manpower to compete at the highest levels. In the late 1990s, the Internet changed this and many microenterprises came about. Microenterprises are smaller companies that employ less than 10 people and only require small sums of money to start. Being small offers lots of flexibility to these companies as they can react more quickly than corporate giants when a business opportunity arises. Many technology companies that produce mobile apps and websites fall into this category. Keep in mind that having a small staff doesn’t mean small profits, as microenterprises can earn hundreds of millions of dollars per year. Thinking small can also lead to a tremendous improvement in quality. One example of this is microbreweries, which are smaller-sized breweries that produce far less beer than traditional breweries. Since microbreweries don’t have to target large markets and make millions of sales to stay open, they can monitor the brewing process carefully to make sure everything is perfect. In addition, microbreweries can experiment with unique flavours that many traditional brewers would shy away from. So the next time you are asked to “think big”, remember that good things may also come in small packages.
8. Who would most enjoy the passage?

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"I'd like to change the ………. Please give me the remote control."

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Computer science must _____ in schools.

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Flying Drones into Danger Zones
A plane is sent deep into the enemy territory with a deadly mission. It is assigned to eliminate several key targets with a precision bombing campaign. This mission won’t be easy, however, as to be successful, the plane will have to avoid enemy rockets and tank fire. There will be no risk to the life of the “pilot” of the plane because he will not be able to aboard the vessel. Instead, he will be thousands of miles away inside a control tower, as he is operating a drone. Drones, which are also called UVAs or unmanned aerial vehicles, marked a major step forward in technology. Inventors have been working on them since the early 1900s. Although some devices were designed back then, they weren’t able to do much more than a standard model airplane. In fact, it was not until a US plane was shot down in 1959 during the Cold War that the US military really got serious about drones. The aim was to save pilots’ lives while flying over hazardous territories. Drones usually fall into two categories. The first type of drones relies on human control from a remote location. The second type of drones is pre­programmed with computer instructions, and it then completes its mission operating autonomously. In addition to protecting pilots’ lives, drones also have several other advantages. They can stay in the air for longer periods of time because there is no concern for eating, sleeping, or rest breaks that pilots typically require. Drones can also be produced cheaper since manufacturers don’t need to value safety precautions as they would for aircraft flown by humans. Despite their usefulness, military drones have been the cause of great criticism over the past decade. There have been cases of British and American drones missing their targets and killing innocent civilians instead. The Brookings Institution released a statistic that for every military leader who is killed by a drone strike, ten civilians die. Some suggest that if human pilots were flying these planes, they wouldn’t have made these errors. Drones don’t always have targets that they must eliminate. The military also employs special surveillance drones that use long-range cameras to gather information about buildings, enemy soldier formations, and other vital information from the ground. In the end, whether people are for or against the use of drones, it appears that they are certain here to stay.
6. Why are some people against drones?

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I will take a first-aid _________ to learn how to help people in case of emergency.

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Our education will help with the ...... of knowledge for the young.

Read the following passage and mark the letter A, B, C, or D to indicate the correct answer to each of the questions.
Together, the thousands of scientists and conservation organizations that contribute to the International Union for Conservation of Nature (IUCN) Red List and other systems of assessment provide the world's largest knowledge base on the global status of species. The aim of these systems is to provide the general public, conservationists, nongovernmental organizations, the media, decision makers, and policy makers with comprehensive and scientifically rigorous information on the conservation status of the world's species and the threats that drive the observed patterns of population decline. Scientists in conservation and protected area management agencies use data on species status in the development of conservation planning and prioritization, the identification of important sites and species for dedicated conservation action and recovery planning, and educational programs. Although the IUCN Red List and other similar species-assessment tools do not prescribe the action to be taken, the data within the list are often used to inform legislation and policy and to determine conservation priorities at regional, national, and international levels. In contrast, the listing criteria of other categorization systems (such as the United States Endangered Species Act, the CITES) are prescriptive; they often require that landowners and various governmental agencies take specific mandatory steps to protect species falling within particular categories of threat It is likely that many undescribed or unassessed species of plants, animals, and other organisms have become or are in the process of becoming extinct. To maintain healthy populations of both known and unknown species, assessments and reassessments are valuable tools. Such monitoring work must continue so that the most current knowledge can be applied to effective environmental monitoring and management efforts. For many threatened species, large well-protected conservation areas (biological reserves) often play major roles in curbing population declines. Such reserves are often cited by conservation biologists and other authorities as the best way to protect individual species as well as the ecosystems they inhabit. In addition, large biological reserves may harbor several undescribed and unassessed species. Despite the creation of several large reserves around the world, poaching and illegal trafficking plague many areas. Consequently, even species in those areas require continued monitored and periodic assessment.
6. The word "mandatory" in paragraph 1 is closest in meaning to ____.

Read the reading below carefully, and then complete it with the best option A, B, C or D given below:
Birthday is the day when a person was (1) _______. In many places, on a person's birthday, he or she celebrates with friends and family at a party, where they eat cake or other food, and get gifts. Many religions celebrate the birth of their founders or religious figures with special holidays. In each country, (2) _______ there is a different version of the song call “Happy Birthday”, they still share the same meaning as well as rhythm. In many legal systems, the age of that newborn is 0 years old. But in Korea, they are already one years old. This creates confusion to many people who work with Koreans because they can’t (3) _______ the rules of calculating age. A person could be 16 in the US but 18 (4) _______ he or she is Korean, despite being born in the same year. This is why Koreans usually tell their age by saying the year they were born in instead of (5) _______ telling their age

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In Vietnam, Tet is the grandest and most important ………… in the year

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions:
Recent technological advances in manned and unmanned vehicles, along with breakthroughs in satellite technology and computer equipment, have overcome some of the limitations of divers and diving equipment for scientists doing research on the great oceans of the world. Without a vehicle, divers often became sluggish, and their mental concentration was severely limited. Because undersea pressure affects their speech organs, communication among divers has always been difficult or impossible. But today, most oceanographers avoid the use of vulnerable human divers, preferring to reduce the risk to human life and make direct observations by means of instruments that are lowered into the ocean, from samples take from the water, or from photographs made by orbiting satellites. Direct observations of the ocean floor can be made not only by divers but also by deep-diving submarines in the water and even by the technology of sophisticated aerial photography from vantage points above the surface of more than seven miles and cruise at depths of fifteen thousand feet. In addition, radio-equipped buoys can be operated by remote control in order to transmit information back to land-based laboratories via satellite. Particularly important for ocean study are data about water temperature, currents, and weather. Satellite photographs can show the distribution of sea ice, oil slicks, and cloud formations over the ocean. Maps created from satellite pictures can represent the temperature and the color of the ocean's surface, enabling researchers to study the ocean currents from laboratories on dry land. Furthermore, computers help oceanographers to collect, organize, and analyze data from submarines and satellites. By creating a model of the ocean's movement and characteristics, scientists can predict the patterns and possible effects of the ocean on the environment.
Recently, many oceanographers have been relying more on satellites and computers than on research ships or even submarine vehicles because they can supply a greater range of information more quickly and more effectively. Some of humankind's most serious problems, especially those concerning energy and food, may be solved with the help of observations made possible by this new technology.

Undersea vehicles    .

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I think New York is ……………. than Pari.

DAKAR (August 4) – Nentique Laboratories, Inc., announced today the development of a new variety of organic wheat that ---143--- heat. Dozens of plants were cross-pollinated over many years to produce this variety, known as GR-712. It joins a growing list of ---144--- that can withstand high temperatures during extended dry periods. "Some farmers in regions close to the equator focus---145--- on rice production because rice grows well in hot climates. But in the Sahara, it is too dry for much of the year," explains company spokesman Ahmad Niang. "But for a small investment in GR-712 seeds, farmers will now be able  to  grow  wheat  in  our  region."  146---.  This added income can, in turn, be reinvested in better machinery, which will encourage more environmentally friendly farming practices.

146................

Chọn câu đồng nghĩa với câu trên:
We cut down many forests. The Earth becomes hot.

Before we had kids, I used to do more housework than my husband did, but he was working thirteen hour days at the office compared _____ my eight-hour ones.

(484)_____