In many countries today, laws protect wildlife. In India, the need for such protection     1     (realize) centuries ago. About 300 years ago,     2     Indian writer described forests     3     were somewhat like national parks today. The killing of animals was     4     (careful) supervised(监督). Some animals were fully protected in the forest. Nobody was allowed     5    (cut) down timber(木材), burn wood for charcoal, or catch animals for their fur. Animals which became     6    (danger) to human visitors were caught or killed outside the park, so that other animals would not become uneasy.  The need for wildlife protection is     7    (great) now than before. About a thousand species of animals are in danger of dying out,     8     the rate at which they are being destroyed is increasing. If we don’t take     9    (measure) to protect wildlife, some day our children will see no living creatures     10    themselves.

When it comes to wildlife     1     (protect), all species -the good, the bad, and the ugly -should be treated     2     (equal). Pandas, dolphins, and other cute wildlife     3     (be) important, but we must pay attention     4     less cute animals, too. The world needs all     5     (kind) -without variety, our planet cannot survive. So if you want the future to be     6     (beauty), you have to give ugly a chance.

Billions of trees are being cut down every year     7     (make) paper for humans. Every tree     8     is cut down is a part of the habitat of animals such as     9     (this) koalas. In this way a lot of animal homes are being destroyed! Is     10     right to make animals homeless so that humans can have more paper？

Strange things happened in the city of Tangshan. The well walls had deep cracks. A     1     (smell) gas came out of them. At 3:42     2     the morning of July 28, 1976, everything began to shake. It seemed as if the world were coming to an end. One of the most deadly earthquakes of the 20th century had begun. Soon the whole city lay in ruins. Two thirds of the people     3     lived there were dead or injured. The number of people     4     (kill) in the quake was more than 240,000. Everything in the city     5     (destroy). People were shocked at this and wondered how long the disaster would last. The army     6     (organize) teams to dig out those who were trapped and to bury the dead. Workers built shelters for     7     (survive). Food and water were taken to the city.     8     (slow) the city began to breathe again. Tangshan began to revive     9     (it) and get up on its feet again. With strong support from the government and the tireless efforts of the city's people, a new Tangshan was built. Tangshan city has proved that in times of disaster, people must unify and show the wisdom to stay positive and rebuild for     10     brighter future.

California burns every year, but 2020 is the worst year yet. In a study, more than 77,600 fires    1    (burn) over 2.5 million acres of land so far this year. Unfortunately, the season still has months to run. Over the past decade, the state has spent    2    average of $ 3.7 billion a year    3    (fight)fires. Although smaller than this year's, the 2018 fire season was    4    (particular) destructive, killing 100 people and burning tens of thousands of buildings.

The reason for the burs is a double hit of climate change and development. Pricy housing has pushed people onto    5    (cheap) land close to the wilderness. Meanwhile, climate change is extending the dry season, which stores up fuel for fires.

So    6    can be done to prevent the spread of burns? Clever designs can help make buildings fight against fires that spread 10 neighboring buildings.    7    (material) such as concrete, adobe or stucco are a better bet than walls in a flammable wood, some of    8    promise to hold back the flames for two hours or more. Besides, opening agricultural lands can be a useful measure, too. Australia, which also suffers    9    wildfires, has experimented with bunkers (掩体) specially    10    (design) to hold back fires for an hour or more.

On 8 November 2013, Super Typhoon Haiyan swept through the Philippines. All of a sudden, a whole city lay in     1    （ruin）. 70 to 80 percent of the buildings were     2    （destroy）. The people were so     3    （frighten）that they felt as if the world were coming to     4     end. However, hope was not lost. Many countries and     5    （organise）came to the rescue. Slowly, the city began to breathe again.

Everywhere     1     (survive) looked, there was nothing     2     ruins. Nearly everything in the city was     3     (destroy). About 75 percent of the city’s factories and buildings, 90 percent of its homes, and all of its hospitals were     4     (go). Bricks covered the ground like red autumn     5    (leaf), but no wind could blow them away. Most bridges had     6    (fall) or were not safe to cross. The railway tracks were now     7    (use)   pieces of metal. Tens of thousands of cows, hundreds of thousands of pigs, and millions of chickens were dead. Sand now filled the wells instead of water. People were     8     shock— and then, later that afternoon, another big quake     9    (shake) Tangshan again.

Even more buildings fell down. Water, food, and electricity were hard     10     (get). People began to wonder how long the disaster would last.

With the     1     （develop）of industry, air pollution is getting more and more serious. In Beijing, many people suffer different kinds of illnesses because     2     air pollution.

Air pollution is caused by the following     3    (reason): about half of the problem is caused by vehicles. There are more and more cars, buses on the roads, and they give off     4    （poison）gases. 25% of air pollution is caused by factories. Another factor is the smokers. Smoking not only does harm to their health     5     to others.     6     these, about 10%of air pollution is caused by other reasons.

We should take some measures to fight     7     pollution. New fuel can be used to take    8     place of gas. We can plant more trees. If everybody realizes the     9    （important）of environment and does something to stop pollution, the problem will     10     （solve）.

Hawaii possesses the unique scenery of islands, but pollution takes away all the     1    (beautiful) of the beaches here. I hate to go to the beaches on sunny weekends and see rubbish bags lying on the sand, cigarette butts(烟头)     2    (bury) in the sand, and soda cans floating in the ocean.

    3    really annoys me is that I see tourists who visit Hawaii leave their rubbish on the beaches. I was always taught after drinking soda    4    (throw) the can into the place     5    it should stay — the trash can. It’s also     6    (annoy) that some people walk right by rubbish and pretend that it’s not there.

The dogs or the fish are not to blame for it. It’s our fault and we must blame     7    (we). Everyone has to do his or her part to solve this problem. It can     8    (hard) be difficult to do the job. There are a lot of things that we can do. First of all, we can help pick     9    rubbish along the beaches. We could also form organizations that help clean up our beaches. More importantly, we need to start now     10    the beaches are damaged beyond repair.

While thousands of college students headed for warm climate to enjoy sun and fun during their week off from classes, seven local students had other plans.

The Northern Essex Community College (NECC) students and one of their teachers spent part of their spring break in New York City, helping repair an area     1     (destroy) by the hurricane. “I wanted to see for myself what happened,” said Terry. “I couldn’t imagine    2    it is like to lose your home and everything that you know and the    3    (power) effect the hurricane had on those people. I wanted to do something, to understand their feeling of helplessness.” The group headed into Brooklyn’s Red Hook district, which was hit hard by the hurricane. There they met people from other parts of the country,     4    had also volunteered to help. Together, those volunteers and the NECC students worked     5     (clear) rubbish out of a three-story building. They put on protective suits and gloves    6    they entered the building.

Inside the building, the students saw nothing but broken walls and doors and pieces of the building     7    (lie) all over the place.

The students returned to school with     8    sense of achievement, a feeling     9    they helped people in need. I was remarkable how a community lost so much and was still able to recover, and this left the deepest impression    10    the students.

A new bill has been     1    (official) passed in the Philippines that requires students to plant 10 trees each before graduation. According to the details outlined in the bill, the rule applies     2     all students who are to graduate from primary school, high school, and college. Trees can be planted in either forests, reserves, urban areas,     3    (abandon) mining sites, or in communities.

Over the past decades, the Philippines     4    (lose) more than 30% of its forest cover due to illegal logging (伐木), but the new bill means that the younger generation can help to address     5     problem. Under the new rule, 175 million new trees could be planted by students each year. If only 10% of them     6    (survival), that means that 525 billion trees can grow up over the course of one generation.

In fact, this isn’t the only positive rule     7    concerns the younger generation. One school in India made its students pay their school fees by collecting, bringing to school, and     8    (recycle) plastic waste that was lying across the town. This helped raise     9    (aware) of plastic waste in Asian     10    (country). It also allowed more students to seek education and even helped the students to earn some money so they wouldn’t have to rely on child labour for a living.