Being a marine researcher is something that I’ve always dreamed of. I work with a team of scientists,     1    are all experts in their fields, on an international project. I’m currently based in Argentina, which is in South America, studying sea temperatures from Antarctica. Unfortunately, there    2     (be) a significant rise in temperatures over the past 50 years, which is clearly linked to human activity. I hope by educating people about this and sharing research we can work together as a global community    3     (protect) our planet.

Wang Tianchang,     1     native of Gosu Province, moved into the Gobi Desert 22 years ago with his family. They have been fighting the desert ever since,     2    (become) a symbol of China’s anti-desertification (防治荒漠化) campaign.

At first, they     3    (start) planting bushes and sapling. To fund their efforts, they sold most of their farm animals, with only 6 sheep     4    (leave) to support themselves. To make matters     5    (bad), because they weren’t familiar with the environment, the trees they planted in the first two years     6    (blow) away by strong winds. But in time, they learned that adaptable grasses were ideal for “holding down the sand”. A bush known as the sweet-vetch has an 80 percent survival rate even in severe desert     7    (condition),     8     has become a key part of the Wang’s efforts.

Eventually, his efforts have not gone unnoticed. The Chinese government not only appointed Tianchang and his sons     9     forest protectors in 2010, but also started funding their work. The family home is surrounded by a     10    (beauty) vegetable garden, proving that land can in fact be transformed from the desert.

Recycling paper is a great way to help the environment, but reusing things made from paper is even better. Take a copy of magazine, for example. Once you finish     1     (read) it, don’t put it in your recycling bin. Instead, consider sharing it with people     2     haven’t read it, or giving it to your school library so that your classmates can take a look. Maybe, you could find a completely     3     (difference) use for the magazine’s pages. Some readers have used them to wrap gifts for their friends and family.

Like all big cities, Paris has a traffic problem: lots of cars, traffic jams and pollution from exhaust fumes (废气). So since 2007, the city     1     (begin) a plan to improve the situation.

Under the Velib scheme (公共自行车计划), people can take a bicycle, use it as long as they want, and then leave it at the same or another bicycle station. The first half hour is free,     2     if you don’t return it after 30 minutes, you have to pay. It is only 1 a day or 29 a year. The bicycles are as heavy as 25 kilograms, and they’re all grey and have    3    (basket). There are a large number of them in the city, and the bicycle stations are more than the subway stations!

Paris isn’t the first city     4     (operate)a scheme like this. Not everybody thinks it’s a great idea. One Parisian (巴黎人) said, “These bicycles are only suitable     5     short journeys. If people want to travel across the city, they won’t use a bicycle-they’ll still use their cars.”

A city spokesman said, “The bicycle scheme won’t solve all our traffic problems, but it might work in    6    (reduce) air pollution. Traffic, together with factory fumes,           7     (be) a big problem. Global warming and dramatic climate changes are becoming more and more serious,     8    is partly because rain-forests are    9    (gradual) disappearing. And it’s also because there’s so much pollution. There aren’t any simple answers to traffic problems and pollution in cities, but the bicycles might help people lead a healthier life. Unless we do something now, there will be more traffic jams and temperatures will continue to rise, so the problems in our environment will get even       10     (bad).”

Earth Day is an event    1    (annual) celebrated on April 22.     2    (found) by Senator Gaylord Nelson, an American politician and environmentalist, it was originally aimed at helping the public to know the current situation of air and water pollution and    3     (get) people to care about the earth.

In1962, Rachel Carson’s bestselling book “Silent Spring” created an    4    (aware) of the dangerous effects of pesticides (农药) . Then, a fire,     5     broke out in 1969 on Cleveland’s Guyahoga River, shed light on the problem of chemical pollution in water. Senator Gaylord Nelson dreamed of    6    similar large event that would get people to take environmental issues seriously. In 1969, he was inspired by protests against the Vietnam War and came up with the idea for Earth Day.

In the fall of 1969, Nelson announced it and appealed to the entire country to get involved. Consequently, telegrams, letters and telephone calls    7    all over the country poured in. Since 1970, Earth Day celebration have grown. Later, Nelson    8    (award) the Presidential Medal of Freedom in recognition of his work.

Today, Earth Day is celebrated around the world every April 22. Sometimes numerous communities celebrate Earth Week, an entire week of    9    (activity) focused on the Environmental issues. In 2017, the March for Science    10    (occur) on Earth Day(April 22, 2017) and was followed by the People’s Climate Mobilization (April 29, 2017).

Green Hills, Clear Water, Blue Sky is a project that was set up     1     the government three years ago. Since it was started, many people have taken part. They think it is their duty     2    (make) the Earth beautiful and     3    (peace). At the same time, they insist that the government should play     4     important role and try     5    (they) best to protect the environment. Some owners of factories are. damaging the environment by     6    (pollute) rivers with chemical waste. So it     7    (believe) that the government should pass laws to punish people     8     damage the environment. Besides, the government should build conservation     9    (center )so that plants     10     animals in danger can be protected.

All in all, people and the government should work side by side to take care of the Earth.

9 . Shark attacks can be deadly, but they are not common. Each year, sharks usually kill fewer than 10 people worldwide, and about 100 people     1     (injure). You are more likely to be attacked in parts of the sea     2     tourists throw in food to bring in sharks. However, people are dangerous to sharks, too. 60 million sharks are killed     3     food and medicine every year. As a result, some kinds of sharks may die out completely.     4     (protect) these wonderful animals, some countries have made programs to help them survive.

Tibetan antelopes are very graceful animals,     1     live on the plains of Tibet, Xinjiang, and Qinghai. They are in danger because many of them are being hunted     2     (illegal) for their valuable fur. The population     3     (drop) by more than 50 percent between     4     1980s and 1990s. In order to save this species from     5     (die) out, the Chinese government placed it under     6     (nation) protection and some effective     7     (measure) have been carried out. As a result, the antelope population has recovered and in June 2015, the Tibetan antelope     8     (remove) from the endangered species list. However, the government will continue the     9     (protect) programmes because the threats to the Tibetan antelope have not yet disappeared. In fact, only when we learn to exist     10     harmony with nature can we stop being a threat to wildlife and to our planet.