Chọn câu đồng nghĩa:
“I was not there at the time,” he said.

 

Choose the best answer:
Our seats were __________ far from the stage that we couldn't see the actors and actresses clearly.

Read the passage below carefully, and then choose the best answer:
No More Polar Bears?
We all know that the Earth is getting warmer and warmer. This problem is called “global warming”. We also know that global warming is causing a lot of problems. Ocean levels are getting higher and higher. Because ocean levels are getting higher, storms are getting stronger and stronger. This list of problems goes on and on. Animals are suffering a lot because of global warming. Polar bears are suffering more than most animals. This is because polar bears live in the North Pole. In the North Pole, global warming is making ice melt. Polar bears hunt from large pieces of floating ice. They jump off the ice and hunt for food. Polar bears have to swim and find these floating pieces of ice. These days, they have to swim farther to find the floating ice. Many of them don’t have enough energy. They get too tired, and they die in the water. Polar bears are suffering because of other problems, too. Pollution makes their water dirty. Many countries go to the North Pole to look for oil and gas, and they damage the environment of the bears. In addition, when ships sail through the North Pole, they cause a lot of damage. Finally, people hunt and kill too many polar bears. However, melting ice is definitely the biggest problem. Right now, there are about 25,000 polar bears in the world. If global warming continues, there may be only about 12,000 in the year 2050. By the year 2080, that number might be much smaller. It is important to study polar bears. When we learn about polar bears, we also learn about the health of the North Pole. If polar bears are doing well, then the environment in the North Pole is probably healthy. If polar bears are suffering then there are probably serious problems in the North Pole. Right now, governments around the world are working to help polar bears. There are new laws that protect polar bears. However, if global warming continues to get worse, polar bears may disappear forever.
3. Why is it important to study polar bears?

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:
Fish that live on the sea bottom benefit by being flat and hugging the contours. There are two very differcent types of flatfish and they have evolved in very separate ways. The skates ad rays, relatives of the rharks, have become flat in what might be called the obivious way. Their bodies have grown out sideways to form grat “wings”. They look as though they have been flattened but have remained symmetrical and “the right way up”. Conversely, fish such sas plaice, sole, and halibut have become flat in a different way. There are bony fish which have a marked tendency to be flattened in a vertical direction; they are much “taller” than they are wide. They use their whole, vertically flattened bodies as swimming surfaces, which undulat through the water as they move. Therefore, when their ancestors migrate to the seabed, they lay on one side than on their bellies. However, this raises the problem that one eye was always looking down into the sand and was effectively useless – In evolution this problem was soleved by the lower eye “moving” around the other side. We see this process off moving around enacted in the development of every young bony flatfish. It starts life swimming near the surface, and is symmetrical and vertically flattened, but then the skull starts to grow in a strange asymmetrical twisted fashion,, so that one eye, for instance the left, moves over the top of the head upwards, an old Picasso – like vision. Incidentally, some species of 20 flatfish settle on the right side, others on left, and others on either side.

It can be inferred from the passage that the early life of a flatfish is     .

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word for each of the numbered blanks.
                       THE LIFE OF COUNTRY VET
Don Strange, who works as a vet in northern England, leads a busy life. As well as having to treat pets which are unwell, he often visits farms where problems of (1).......... kinds await him. He has lost (2)..........of the number of times he has been called out at midnight to give advice to a farmer with sick sheep or cows.
Recently, a television company chose Don as the subject of a documentary program it was making about the life of a country vet. The program showed the difficult situations Don faces every day such as helping a cow to give birth or winning the trust of an aggressive dog (3)..............needs an injection. Not all of Don’s patients are domestic animals, (4)................. , and in the program people saw him helping an owl which had a damaged wing. It also showed Don holding a meeting with villagers concerned about the damage a new road might do to their (5)......................... environment.

(5)......................

Choose the sentence A, B, C or D which in closest in meaning to the printed sentence.
“I will help you with the housework”, Mai said to me.

Background, in relation to computers, on the screen, the color on which characters are displayed. (1) _______, a white background may be used for black characters. In a windowing environment in which more than one program or document can be available to the user, open but currently inactive (2) _______ are said to be in the background. In the context of operating systems and program execution, background refers to a process, or task, assigned a lower priority in the microprocessor's share of time to tasks other than the task running in the (3) _______. A background process thus often performs its work, such as printing or checking for arriving messages on an electronic mail network, invisibly unless the user requests an update or brings the task to the foreground. (4) _______, only multitasking operating systems are able to support background processing. However, some operating systems that do not support multitasking may be able to perform one or more types of background tasks. For example, in the Apple Macintosh operating system running in Single-Launch Mode (with multitasking (5) _______), the Background Printing option can be used to print documents while the user is doing other work.

(15)________

Read the following passage and choose the best answer (A, B, C, D):
Prehistoric mammoths have been preserved in the famous tar pits of Rancho La Brea (Brea is the Spanish word for tar) in what is now the heart of Los Angeles, California. These tar pits have been known for centuries and were formerly mine for their natural asphalt, a black or brown petroleum-like substance. Thousands of tons were extracted before 1875, when it was first noticed that the tar contained fossil remains. Major excavations were undertaken that established the significance of this remarkable site. The tar pits were found to contain the remains of scores of species of animals from the last 30,000 years of the Ice Age. Since then, over 100 tons of fossils, 1.5 million from vertebrates, 2.5 million from invertebrates, have been recovered, often in densely concentrated tangled masses. The creatures found range from insects and birds to giant ground sloths, but a total of 17 proboscideans (animals with a proboscis or long nose) - including mastodons and Columbian mammoths - have been recovered, most of them from Pit 9, the deepest bone-bearing deposit, which was excavated in 1914. Most of the fossils date to between 40,000 and 10,000 years ago. The asphalt at La Brea seeps to the surface, especially in the summer, and forms shallow puddles that would often have been concealed by leaves and dust. Unwary animals would become trapped on these thin sheets of liquid asphalt, which are extremely sticky in warm weather. Stuck, the unfortunate beasts would die of exhaustion and hunger or fall prey to predators that often also became stuck. As the animals decayed, more scavengers would be attracted and caught in their turn. Carnivores greatly outnumber herbivores in the collection: for every large herbivore, there is one saber-tooth cat, a coyote, and four wolves. The fact that some bones are heavily weathered shows that some bodies remained above the surface for weeks or months. Bacteria in the asphalt itself would have consumed some of the tissues of other than bones, and the asphalt itself would dissolve what was left, at the same time impregnating and beautifully preserving the saturated bones, rendering them dark brown and shiny.
2. In using the phrase "the heart of Los Angeles" in paragraph 1, the author is talking about the city's: 

They have just found the couple and their car ____ were swept away during the heavy storm last week.

(274)_____ 

Rewrite sentences without changing the meaning:
We couldn’t reach the house because the road was flooded.

The ability to conduct electricity is one of the key properties of a metal. Other solid material such as silicon can conduct electricity but only effectively at certain temperatures. Also, some substances such as salt (sodium chloride) can conduct when molten or when dissolved in water. The ability of metals to conduct electricity is due to how their atoms bond together. In order to bond together the metal atoms lose at least one of their outermost electrons. This leaves the metal atoms with a positive charge and they are now strictly ions. The lost electrons are free to move in what are known as a sea of electrons. Since the electrons are negatively charged they attract the ions and this is what keeps the structure together.

An electric current is a flow of charge and since the electrons in the sea of electrons are free to move they can be made to flow in one direction when a source of electrical energy such as a battery is connected to the metal. Hence we have an electric current flowing through the wire, and this is what makes metals such good conductors of electricity. The only other common solid conducting material that pencil users are likely to encounter is graphite (what the 'lead' of a pencil is made from). Graphite is a form of carbon and again the carbon atoms bond in such a way that there is a sea of electrons that can be made to flow as an electric current. Likewise, if we have an ionic substance like salt we can make the electrically charged ions flow to create a current but only when those ions are free to move, either when the substance is a liquid or dissolved in water. In its solid state an ionic substance like salt cannot conduct electricity as its charged ions cannot flow.

Electrical insulators are substances that cannot conduct electricity well either, because they contain no charged particles or any charged particles they might contain do not flow easily. Water itself is a poor conductor or electricity as it does not contain a significant amount of fully charged particles (the ends of a water molecule are partly charged but overall the molecule is neutral). However, most water we encounter does contain dissolved charged particles, so it will be more conductive than pure water. Many of the problems that occur when touching electrical devices with wet hands result from the ever-present salt that is left on our skin through perspiration and it dissolves in the water to make it more conductive.

Which of the following could best serve as the title of the passage?

Read the following passage and choose the best answer (A, B, C, D):
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.
8. According to the passage, which of the following does NOT describe carbohydrates?

Choose the best answer:
Many/ people/ this area/ have/ cholera/ because/ they/ drink/ untreat/ water.

Read the passage below carefully, and then choose the best answer:
Microwave Magic
The 20th century was a time in which many great inventions were created. Things like the automobile, computers, and the Internet truly changed the way we live forever. Yet, one handy invention that has made eating at home far more convenient is often overlooked. The invention of microwave allowed even the worst cooks in the world to prepare a meal in essentially no time at all. What is really fascinating about microwave ovens is that they were invented by accident. During World War II, British scientists discovered a device called a magnetron that can produce microwaves. They hoped it would help them quickly identify German planes that were intent on bombing their nation. However, it would be an American scientist named Percy Spencer who linked microwaves with cooking food. One day, Spencer brought a candy bar with him to work, and he stored it in his shirt pocket. While walking through a radar set, he noticed that the radar had somehow melted his treat. Afterwards, Spencer and his coworkers started to experiment with heating other things. They tried heating some popcorn kernels and it worked like a charm. Next, they tried to cook an egg with microwaves, but it literally blew up in their face. In 1945, the company that Spencer worked for, Raytheon, filed a patent for the technology and started working on ways to make microwave ovens more efficient. The first commercial microwave ovens hit the market, and an industry was born. In the first few years, things didn’t appear too promising. Early microwaves were quite expensive and they were big and chunky, so it was difficult to fit them in most kitchens. Yet, people did see the benefit an ease of being able to cook foods so quickly. Therefore, once manufacturers were able to shrink the device and bring down the price a bit, sales started to skyrocket. By 1986, approximately 25 percent of Americans had a microwave oven in their kitchen. Through the years, many people have questioned the safety and potential negative health effects of microwaves, fearing that the technology was a little too good to be true. Yet, some studies have shown that microwaving food actually helps it to retain more nutrients because of the short cooking times and minimal water required. However, it is essential to use microwave containers to avoid harmful chemicals from possibly leaking into your food. Microwave dishes may never be seen as gourmet cooking, but when you are in a hurry, nothing beats this method of cooking.
1. What is the main point of the first paragraph?

____ sure that you follow the instructions carefully.

(193)______

Choose the best answer:
_____ is a running race of over 26 miles.

Read a text about some young people who write for a TV show and decide if the following statements are True, False or Not Given.

Teen writers on TV hit Catch

Dan Finelli is a normal teenager from North London; he goes to school, enjoys hanging out with his mates and only occasionally misses his classes. But Dan also happens to be a writer for the popular teen drama, Catch. The second series starts this week and the one-hour episode that Dan wrote, his very first for the show, will be on screen later in the year. This will make him one of the youngest writers of a peak-time drama ever.

'What's great about Catch is that the characters are exactly like the people around you,' says Dan, who also plays the part of Computer Chris in the show. 'When I'm at school and one of my friend says something funny, I write it down in my notebook and use it later in the script. I never tell them I'm doing it. I just want it to sound as real as possible,' Dan adds.

Catch is about the lives of a group of 16-18-year-olds in a sixth-form college. The school doesn't really exist, but the whole show does feel very true to life. There's an episode every week and each one concentrates on an individual member of the group and tells his or her story.

The idea for the programme came from an unusual source, a father-and-son pair of writers, Ken Thomas and his son, Callum. They took their idea to a TV company and were very surprised when the company said they were keen to make it. Now, Ken and Callum are central members of the writing team but in order to build that team, Ken had to go to theatre companies and writing groups all over London to find both writers and teens to advise on the stories.

Ken Thomas looked for young people to write Catch at various places around London.

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 1 to 5.
Drone racing is an exciting new sport, that has become popular faster than (1).......... other sport before it. Pilots steer small and lightweight, but high-powered drones along courses with obstacles. They fly through gates and around flags at speeds of over a hundred miles an hour.
 They control the drones using VR-like headgear. Every drone has a camera (2)...........to it so that spectators can also view flights either on a big screen or with special headgear.
The races take place either outdoors - in big stadiums, or indoors in old warehouses and sports arenas. (3)................ are short because the battery time of drones is limited.
(4)..............drone racing started only a few years ago there are already international competitions that take place all over the world. In professional leagues, drone pilots compete for thousands of dollars. In March, the World Drone Prix was staged in Dubai. A 16-year old British teenager not only one the race but also received a prize money of 250 000 dollars.
Television and other media have become aware of drone racing. ESPN, an Amercian sports channel, will be broadcasting international drone races starting this August. Races are also recorded and uploaded to YouTube and other video platforms (5)............. they can be viewed over and over again.
(3).................

Choose the best answer:
We are excited ………. the coming vacation

Choose the best answer:
Would you mind not _______ on the radio until I’ve finished typing the document?

Read the following passage and choose the best answer (A, B, C, D):
Glenbrook South (GBS) High School is in a suburb of Chicago, lllinois, in the United States. It is an award-winning school with a highly competent teaching staff. It has over 400 Asian Pacific American students-over 17 percent of the students in the school. Of these, the majority are Korean American. This is very unusual in a state where Korean Americans are less than 1 percent of the population. The interactions of the Korean American students at GBS were the subject of an article in Asian Week magazine. Different Korean American students react differently to being in a high school where most students are white. Professor Pyong Gap Min, an expert on Korean life in America, believes that Korean Americans in this situation can sometimes feel inhibited or ashamed of their Korean identity. Asian Week interviewed a number of GBS students, and each had a different attitude. Eighteen-year-old Alice said that she used to spend time only with Korean American friends. Although she felt secure with those friends, she found herself motivated to form closer relationships with non-Koreans, too. She said that she felt she was missing out on new experiences and challenges. Seventeen-year-old John moved in the opposite direction. In junior high school, most of John's friends were white. After coming to GBS, his sense of his Korean American identity was restored, and he decided to have mainly Korean American friends. He feels that he and his Korean American friends understand each other better. For example, they understand about severe parental pressures to succeed at school; John felt his white friends couldn't really understand. Sixteen-year-old Paul has some Korean American friends, but he says he spends most of his time with his white friends. He is often the only Asian American in the group, but he doesn't mind. What Paul likes about the white culture is that he can be more radical - he can be as loud and funny as he wants to be. He says he doesn't see as much of that among the Asian students. Without belittling the importance of what these students had to say, it's important to remember that their opinions at this phase of their lives are bound to change as they grow into adulthood. But these honest opinions can help US better understand issues of cultural relations, and their honesty might help Americans from different cultural groups to get along better in the future. 
10. What can be inferred from the fifth paragraph?