【题目】B

The cost of keeping tigers alive in the wild is about $80 one square meter per year, say conservationists(自然资源保护论者) but only about $50m per year is being guaranteed. The figures come from a new assessment(评估) that suggests targeting efforts in 42 selected breeding sites.

About 3,500 tigers remain in the wild, and only about 1,000 breeding females. Although conservation programmes are operating in some countries, notably India, the tiger has actually disappeared from vast areas of Asia where it used to live.

Once found from Turkey to the eastern coast of Russia, it is now concentrated in small areas of South and East Asia, though even here it is extinct in some countries such as Pakistan and down to fewer than 50 individuals in others, including Cambodia, China, Laos and Vietnam.

The animals are found in only about 7% of their historical range. But the new study suggests conservation would benefit from concentrating efforts into still smaller areas specifically, into 42 source sites that make up only about 6% of the tigers current range, or about 0.5% of the area it used to span.

The immediate priority, however, must be to ensure that the few breeding populations still in existence can be protected and monitored. The figure of $80m per year is the cost of safeguarding and monitoring populations in these key sites. More than half of the figure is already being provided by the range states themselves, by international donors and by conservation groups.

The big hope this year is the Tiger Summit, to be hosted by Russias Prime Minister Vladimir Putin in St Petersburg. Originally planned for this week, it has been postponed until November in the hope of attracting a greater number of national leaders.

【1】Tigers have disappeared in ___________.

A. India B. Cambodia C. China D. Pakistan

【2】 Whats the primary task of conservationists according to this passage?

A. Enlarging the areas of tigers

B. Assessing the situation of tigers further

C. Providing more money for tiger protection

D. Protecting and monitoring the breeding female tigers

【3】How much is lacking to protect one tiger in the wild one square meter per year?

A. About $80. B. About $50.

C. About $30. D. About $20.

【4】 What can we know from the last paragraph?

A. Russia does best in tiger protection in the world.

B. Plans for tiger protection are difficult to carry out.

C. Some national leaders pay less attention to tiger protection.

D. More money is sure to be provided by Asian countries to protect tigers.

【5】 Which of the following is TRUE according to the passage?

A. There are about 3,500 tigers in the world.

B. Tigers mainly appear in South and East Asia nowadays.

C. The tigers current range decreased by 99.5% than it used to be.

D. More than half of the money used to protect tigers comes from the governments at present.

【题目】七选五

根据短文内容,从短文后的七个选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

Most of us lead a busy life. 1 We think, If I reached my goal, then I would be happy, or If I could get a better job, then I would enjoy life. But why not enjoy life right now?

Firstly, take time to notice and appreciate the beauty in your own surroundings. 2 There is a great big world of wonder and beauty around us! And as Brodersen explains, Look for the beauty of the sunrise and of a friend s smile that brightens your day. Open your eyes to see the beauty you might not normally see. Doing so helps to cheer you up.”

Secondly, taking time to experience some simple pleasures also can bring joy to your heart and ease your stress. Take me for example. 3 One universal simple pleasure is finding things that make you laugh. Make time to laugh every day.

Thirdly, don t take your family and friends for granted. Rich, rewarding relationships add greatly to the enjoyment of life. When you think of someone, why not call, e-mail or write them? 4 As Wayne Lawton explains, Invest time in relationships. Remove the attitude, what s in it for me? Happiness is found in putting other s interests, desires and concerns ahead of our own whenever possible. Selfishness is a dead-end street. 5

A. A short e-mail or phone call can make a world of difference to someone.

B. Driven by the “urgent”, we forget to enjoy life.

C. In my spare time, I enjoy collecting stamps and reading novels.

D. So please treasure relationship.

E. Be aware of beauty in nature.

F. You don’ t need to travel far to find beauty.

G. I delight in simple things like my favorite tea drink, a bubble bath or family photos.

【题目】A

Scientists and marine biologistshad(海洋生物学家) something to celebrate last week when two lost humpback whales(座头鲸) returned to the Pacific Ocean. Delta and Dawn a mother and a baby had circled the Sacramento Bay area for two weeks before going back to the ocean.

We all shouted loudly like Yay!said Jim Oswald, a spokesman for the Marine Mammal Center. Its been really exciting.

The humpback whales were last spotted on May 29 near the Golden Gate Bridge in San Francisco, California. Scientists are sure that the whales swam into open water during the evening of May 29 or early the next morning, since there have been no further sightings of the whales. Even so, boats were sent out to look for them, just in case the whales made another wrong turn.

Officials spent two weeks trying to get the whales to turn back towards the ocean. Biologists played recordings of whale-feeding as well as unfamiliar sounds to try to make the whales head back to the Pacific Ocean.

However, Delta and Dawn gave scientists an unexpected chance to study humpback whales in the wild. Scientists were able to gather sound recordings and watch their behaviors. This is especially exciting because humpback whales are an endangered species. Whats more, scientists dont usually have the chance to observe (观察) them in their natural habitat.

All those things are very hard to get, said Oswald,So what we are doing is filling up the knowledge blank on humpback whales in the wild. Scientists should be able to use this information to help other lost whales in the future.

【1】Jim Oswald was very happy because____________.

A. the whales traveled to Sacramento Bay

B. the whales returned to the Pacific Ocean

C. the scientists held a great celebration

D. he found the lost humpback whales

【2】 In order to make the whales go back to the ocean, the biologists____________.

A. fed them with other animals B. swam into open water

C. played music for them D. played strange sounds to them

【3】 The fifth paragraph mainly tells us that____________.

A. humpback whales will disappear in the future

B. scientists are worried about humpback whales

C. humpback whales were excited in their natural habitat

D. scientists learned more about humpback whales

【4】Whats the best title for the passage?

A. Looking for the Lost Whales B. Helping the Lost Whales

C. The Lost Whales Returned D. Two Whales Were Lost

【题目】七选五

根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

体裁

话题

词数

难度

建议时间

说明文

密码的设置和破解的方法

330

★★★★☆

6分钟

(2016·新课标全国卷I) Secret codes (密码)keep messages private. Banks, companies, and government agencies use secret codes in doing business, especially when information is sent by computer.

People have used secret codes for thousands of years. 1 Code breaking never lags(落后) far behind code making. The science of creating and reading coded messages is called cryptography.

There are three main types of cryptography. 2 For example, the first letters ofMy elephant eats too many eelsspell out the hidden messageMeet me.

3 You might represent each letter with a number, for example. Lets number the letters of the alphabet, in order, from 1 to 26. If we substitute a number for each letter, the messageMeet mewould read135 520 135.

A code uses symbols to replace words, phrases, or sentences. To read the message of a real code, you must have a code book. 4 For example, "bridge"might stand formeetandout might stand forme.The messageBridge outwould actually meanMeet me. 5 However, it is also hard to keep a code book secret for long. So codes must be changed frequently.

A. It is very hard to break a code without the code book.

B. In any language, some letters are used more than others.

C. Only people who know the keyword can read the message.

D. As long as there have been codes, people have tried to break them.

E. You can hide a message by having the first letters of each word spell it out.

F. With a code book, you might write down words that would stand for other words.

G. nother way to hide a message is to use symbols to stand for specific letters of the alphabet.

 0  77707  77715  77721  77725  77731  77733  77737  77743  77745  77751  77757  77761  77763  77767  77773  77775  77781  77785  77787  77791  77793  77797  77799  77801  77802  77803  77805  77806  77807  77809  77811  77815  77817  77821  77823  77827  77833  77835  77841  77845  77847  77851  77857  77863  77865  77871  77875  77877  77883  77887  77893  77901  109140 

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网