Carbon dioxide goes up into the atmosphere, and it form a kind of screen that keeps or allows the sunshine in but stop the Earth heart (2)______ getting out.

Meanwhile, most teenagers have difficulty in identifying their own interests. There are a variety of well-organized career talks and student counseling workshops to guide and help teenagers (5)______ what course to take. Furthermore, psychological tests are also used. Certain instruments such as surveys, interviews and computer software can help to find out preferences, interests, or learning styles of the students.

When I eventually started, I was responsible (3)_____ the toy section. I really enjoyed it there and I oved demonstrating the different toys. I was surprised at how friendly my colleagues were, too.

These men and women often worked alone, carrying out research into many different areas of science, and they often received very little (5)_____ for their hard work. At the start of the 20 century, thought, it became clearthat science was becoming more complicated and more expensive. This individual scientist disappeared, to be replaced by highly qualified teams of experts. Modem science was born.

Scuba diving is a sport in (1) you swim underwater for extended (2) using special equipment.

Scuba diving can also be a very relaxing sport and in many places it’s very beginner friendly. Many dive sites are (4) (under the care of an
instructor) after a short briefing and training dive. You can learn to dive far more quickly than you learn snow sports, for example. It’s also
suitable for people with a number of physical disabilities

NOISE POLLUTION
Noise is more than a mere nuisance. At certain levels and durations of exposure, it can cause physical damage to the eardrum, and (1)_____ in emporary or permanent hearing loss. In addition to causing hearing loss, (2)_____ noise exposure can also (3)______ blood pressure and pulse rate, cause irritability, anxiety, and mental fatigue, and interfere with sleep, recreation, and personal communication. Noise pollution control is, (4)______ , of importance in the workplace and in the community. Noise effects can be (5)_____ by a number of techniques, for example, increasing the distance or blocking the path between the noise source and the recipient, reducing noise level at the source, and protecting recipients with earplugs or earmuffs

It is true that keeping t will benet a person’s health in many ways. It has become clear in recent years, that a large number of people are doing less and less exercise and this is now causing many serious illnesses, putting a strain on doctors and hospitals. However, some experts believe that too much exercise can do just as much (1)_____ . Although it is true that moderate exercise such as walking can be very benecial to a person’s health, it is not the only one factor (2)_____ keeps us healthy. Diet is also extremely important and I would argue that it is probably even more important than exercise, although the ideal is for both of these factors to work together. It seems to me that many people are unwilling to put in the effort required to become tter. 3)_____ , too much exercise can also cause problems. So people are urged totake moderate exercise and eat moderately healthily rather than embarking on extreme diets and training. In too many instances, ultra- t people have had heart attacks or dropped down dead. In all, governments need to nd ways of (4)_____ people to take responsibility for their own health. People need to realize that eating healthy food does not have to cost a (5)_____ , nor is it difcult to prepare healthy meals themselves. People need to be better educated about their health.

When hosting an Olympic Games, a country has to take account of several considerations, among which the nancial one is by far the most important. The costs of hosting the Olympics can (1)____ tens of
billions of dollars, and it is commonplace for budgets to double or even triple. In addition to the direct costs of hosting the Games (the opening and closing ceremonies, athletes’ village, security, etc.,), cities often must build expensive new venues (2)_____ lesser-known sports. Once constructed, sports venues often incur additional maintenance costs long after the Games have ended. While costs are the (3)_____ concern for a host city, there are other factors to consider. For one, an Olympic host city may receive substantial revenue from ticket sales, tourist spending, corporate sponsorship, and television rights. Cities such as Los Angeles (1984) actually made a large prot from the Games they hosted. (4)_____ , hosting the Olympic Games confers prestige on a host city and country, which can lead to increased trade and tourism. The Olympics are also an opportunity to invest in projects (5)_____ improve the city’s quality of life, such as new transportation systems

Australia could (2)_____ experience a drought in many parts.