We need to protect animals _______.

A. danger??? B. dangerous??? C. in danger??? D. dangers

　　We sleep every day. Anybody knows that we humans need ____1____. But even the scientists can't explain（解释）____2____ people sleep. All mammals（哺乳动物）, birds and other animals ____3____ need sleep. Some sleep on a tree, ____4____ some（such as dolphins 〈海豚〉）sleep while ____5____ Have you ever noticed the fish when they are sleeping? Yes, they are sleeping ____6____ open eyes.

　　Some scientists think that sleep may help ____7____ animals by taking them out of danger. Some scientists say that smaller animals sleep longer than larger ____8____, for example, a horse sleeps for 3 hours a day. But why do animals sleep? The ____9____, scientists say, may be something obvious（显而易见的）or ____10____ not yet dreamed of（出乎意料的）.We just don't know it.

Tigers are strong and dangerous animals. But now they are in danger.

In the past, there were eight kinds of tigers in the world. But during the 20th century, only five were left. The number of Siberian tigers (东北虎) was about 300, but now it is less than 22. They’re in danger of dying out. If the government does nothing, we won’t be able to see them in ten to twenty years.

In order to stop people from hunting and killing wild tigers, and in order to make wild tigers more, the World Wildlife Fund (世界自然基金会) has started a program (项目) recently (最近). China and twelve other countries joined it.

However, it’s not enough. Remember that nature is a food chain (链). If we hurt and kill too many wild deer and pigs, wild tigers will die out because of hunger (饥饿). So the most important thing is to save the animals that tigers eat. In order to protect the wild tigers, we need call on (号召) more people to stop eating, hunting and killing wild animals.

根据短文内容，选择正确答案。

1.During the 20th century, _______ kinds of wild tigers died out.

A. 3????????????? ????????????? B. 5????????????? C. 8????????????? ????????????? D. 20

2.The number of the wild Siberian tigers reduced (减少) about _______.

A. 5%????????????? B. 22????????????? C. 93%????????????? ????????????? D. 30%

3.Wild tigers will be in danger of dying out without _______.

A. pigs????????????? B. deer????????????? C. people????????????? D. A and B

4.Which of the following statements is NOT true?

A. There are less than 22 wild Siberian tigers now.

B. There are twelve countries in the World Wildlife Fund.

C. Wild tigers mainly feed on pigs and deer.

D. It’s our duty to protect the wild tigers.

5.The passage mainly tells us _______.

A. why and how do we protect the wild tigers

B. The government does everything they could to protect the wild tigers

C. the wild tigers will die out in ten to twenty years

D. the most important thing is to save the animals that tigers eat

根据短文内容回答下列问题                  

Say “No” to plastic bags

  In order to stop plastic pollution, China put a ban(禁令)on thin plastic bags (plastic bags thinner than 0.25 mm). From June 1, 2008, China stopped the production, sale and use of these plastic bags. It stopped shops from giving out free plastic bags to the public and call on the consumers to adopt healthy shopping habits to protect our environment.

                  Why are plastic bags so bad?

  China’s plastic bag consumption(消费量)has rocketed to near three billion bags per day—that’s about 2 for every man, woman and child —causing many tons of plastic to go to landfill sties.

  The bags can take between 400 and 1,000 years to break down, and like all forms of plastic they do not biodegrade. They clog(阻碍)waterways and spoil the landscape. They also pollute the soil and water.

   Plastic bags also present a serious danger to animals. They often mistake them for food. Thousand of them die each year after swallowing or choking with discarded(丢弃的)plastic bags.

  Finally, producing plastic bags requires millions of gallons of petroleum(石油)that could be used for transportation or heating.

                           What can we do?

  Refuse plastic bags in shops, and try to recycle or reuse the ones you do have. But a cloth bag/ basket and keep it with you when you need to go to the shops.

1When did China put a ban on thin plastic bags?

______________________________________

2 Why did China stop from producing the thin plastic bags?

    ______________________________________

3 What is another saying of “plastic bag consumption”?

    ______________________________________

4 What can you do if you go shopping in the supermarket?

    ______________________________________

5 Why does the writer think plastic bags are bad for the animals?

    _______________________________________

6 What is the passage about?

    _______________________________________

7 Can you tell us why plastic bags are so bad?

    _______________________________________