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A．Why species don't avoid extinction by adapting.B．Why species become extinct at the r

A．Why species don't avoid extinction by adapting.

B．Why species become extinct at the rate they do.

C．Why humans aren't extinct.

D．How many species aren't extinct.

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更多“A．Why species don't avoid exti…”相关的问题

第1题

Which of the following sentences expresses OFFER？A．Why don"t you give him some apples？B．Ca

Which of the following sentences expresses OFFER？

A．Why don"t you give him some apples？

B．Can you check the account book again for me？

C．Welcome. What can I do for you？

D．Is Mary going to Australia next week？

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第2题

Speaker A: I've got a fever and a really bad headache. Speaker B:______.A．Why are you so c

Speaker A: I've got a fever and a really bad headache. Speaker B:______.

A．Why are you so careless about yourself？

B．This kind of thing happens to everyone.

C．You should take good care of yourself.

D．Oh, that's too bad. Why don't you take some aspirin？

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第3题

Prehistoric men and women enjoyed a more varied diet than people do now, since they ate

species of plant and several hundreds thousands types of living things. But only a tiny percentage of these were ever domesticated. Modern shops have hastened a trend towards specialization which began in the earliest days of agriculture. The food of the rich countries has become cheaper relative to wages. It is speedily distributed in supermarkets. But the choice annually becomes less and less great. Even individual foods themselves become more standardized. We live in the world of carrot specially blunted in order to avoid making a hole in the bag, and the tomato grown to meet a demand for a standard weight of weighting tomatoes to a kilo. Siri von Reis asks: "Only the three major cereals (谷物类食物) and perhaps ten other widely cultivated species stand between famine and survival for the world's human population and a handful of drug plants has served Western civilization for several thousand years. A rather obvious question arises: Are we missing something？" After all, there are 800 000 species of plant on earth.

1、In prehistoric times people____.

A、ate much more than we do today

B、lived mainly on plant food

C、had a wide-ranging diet

D、were more fussy about what they ate

2、Most of us have come to expect____.

A、no variation in our diet

B、a reduction in food supplies

C、a specialist diet

D、food conforming to a set standard

3、The specialization of food was started by____.

A、the emergence of supermarkets

B、the rise of agriculture

C、the rich countries

D、the modern shops

4、According to the passage, people in the West today survive on____.

A、carrots and tomatoes

B、several thousand types of plants and cereals

C、a very small number of cultivated foods

D、special species planted one thousand years ago

5、The conclusion seems to be that we____.

A、could make use of more natural species

B、don't cultivate the right kind of food

C、produce more food than we need

D、cultivate too many different species

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第4题

It is often the fact ____ the team members haven't agreed on how they will deliver

a product or service.

A.why

B.that

C.which

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第5题

You might ask, what is Chinglish, anyway? It depends on whom you ask. Chinese parents

You might ask, what is Chinglish, anyway？ It depends on whom you ask. Chinese parents raising their children in English-speaking countries will probably answer: Chinglish is a useful mix of standard Chinese or Cantonese terms with day-to-day English. It is indeed convenient to shorten a sentence such as “I don’t want to go now because it is too hot and it will be hard to find a parking lot anyway” into “Don’t go la, hot la, tai mafan la.” For the Chinese high-school teacher, Chinglish is the students’ unsuccessful attempts to understand English in a Chinese way, resulting in sentences such as “Please hurry to walk or we’ll be late” or “She is very miserable and her heart broke.” However, the English-speaking traveler more frequently comes across Chinglish in the form. of public signs. No matter how one looks at the phenomenon, one thing is clear: Chinglish is not a language. Chinglish might be found, according to some scholars, in Chinese Pidgin (混杂语) English, which came to life in the eighteenth century when the British set up their first trading posts in Guangzhou. The term came from the word “business” and served, according to the great Yale China scholar Jonathan Spencer, “to keep the differing communities in touch, by mixing words from Portuguese, Indian, English, and various Chinese dialects, and spelling them according to Chinese grammar.” Some believe that expressions like “Long time no see” or “No can do” appeared during that time. Others refer to the late Qing-Dynasty Empress Dowager Cixi, who forced Chinese villagers to live and work in the West in the nineteenth and early twentieth century. Another possibility is the so-called Yangjingbang , a mix of English and Chinese in the time of Lu Xun, China’s greatest twentieth-century writer. Very influential, too, are the large numbers of people from China to the United States, who came from the Gold Rush time to the last twenty-five years since the beginning of China’s policy of Reform. and Opening. No matter which theory one prefers, two things are certain: first, Chinglish exists because people move, and second, as a language phenomenon (现象), it is almost new. Although most Chinglish expressions are widely regarded as mistakes, occasionally some are found enjoyable. Such errors will not die, as they keep coming all the more in our time, largely thanks to the Internet.

1.According to the passage, Chinglish is regarded as useful by ______.

A.some western scholars

B.English-speaking travelers

C.Chinese high-school teachers

D.Chinese parents in English-speaking countries

2. The second paragraph mainly discusses ______.

A.why Chinglish became popular

B.how Chinglish came into being

C.who invented the term “Chinglish”

D.where Chinglish was most popular

3.According to Jonathan Spencer, Pidgin English serves to ______.

A.force Chinese villagers to learn English

B.overcome language difficulties in business

C.help peoples communicate with each other

D.enlarge the vocabulary of the Chinese language

4. According to the passage, Yangjingbang (Line 11, Paragraph 2) is ______.

A.a kind of Chinglish

B.an influential language

C.a mix of any two languages

D.a language in Lu Xun’s time

5.The author’s attitude towards Chinglish can be described as ______.

A.critical

B.objective

C.emotional

D.supportive

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第6题

The United Nations declared 2011 to 2012 the Year of the Bat. The campaign was launched

as a way to strengthen efforts for protecting the world's only flying mammal. These creatures can be found in many parts of the world. Bats live in cities, deserts, grasslands and forests.There are over 1,200 bat species.

The smallest bat in the world is from Southeast Asia.This kind of bat measures about 30 millimeters in length. The world's largest bat, the Giant Golden-Crowned Flying Fox, has a wingspan of 1.5 meters.Most bats eat insects,but many feed on fruit or nectar from flowers.

Many people think bats are blind,but this is not true.Many species have very good sight.Most bats communicate and find their way by making"echolocation" (回声定位法 ) noises.They produce high-frequency noises and can estimate the distance of an object by using the sound echoes that bounce back to them. So, while bats may travel in total darkness, they"see"using sound.

Sadly, bats are widely feared and misunderstood. Most bats come out of their shelters only at nightfall. Three bat species feed on blood. Because of these qualities, bats have long been linked in many cultures to death, darkness and blood-drinking.

Yet bats are important for agriculture and our environment. They help pollinate (授粉)plants and spread seeds. They also help control insects. Bats eat huge numbers of insects,including kinds that damage crops.

For example, a brown bat can eat more than 1,000 insects in one hour.Onereport says bats save American farmers billions of dollars every year by reducing crop damage and limiting the need for chemicals that kill insects.

Over one-fifth of all bat species are under threat. They face disease and the human destruction of their natural environments.In some areas, diseases have killed nearly 100% of bat populations.

第21题 The United Nations declared 2011 to 2012 the Year of the Bat,because bats_____.

A.are beneficial animals B.are close to extinction

C.have been misunderstood D.are under serious threat

第22题 Bats can fly in total darkness, because_____.

A.their eye sight is extremely sharp

B.they can fly without using their sight

C.they don't have eye sight in daytime

D.they are very familiar with their environment

第23题 Many people fear bats because_____.

A.many cultures connect bats with unpleasant things

B.bats are very ugly in appearance

C.bats are thought to be blind

D.bats carry deadly diseases with them

第24题 It can be concluded that_____.

A.bats are more easily to be killed by diseases

B.bat population has been reduced sharply these days

C.bats can help farmers save crops and money

D.bats' living environment has been mostly destroyed

第25题 The word" nectar" in the second paragraph probably means_____.

A.the flowers' eyes B.the flowers' leaves

C.the smell produced by flowers D.the liquid produced by flowers

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第7题

Fried FoodsFried foods have long been frowned upon. Nevertheless, the skillet（平底煎锅) is

Fried Foods

Fried foods have long been frowned upon. Nevertheless, the skillet(平底煎锅) is about our handiest and most useful piece of kitchen equipment. Sturdy lumberjacks(伐木工) and others engaged in active labor requiring 4,000 calories per day or more will take approximately one-third of their rations prepared in this fashion. Meat, eggs, and French toast cooked in this way are served in millions of homes daily. Apparently the consumers are not beset with more signs of indigestion than afflict those who insist upon broiling, roasting, or boiling. Some years ago one of our most eminent physiologists investigated the digestibility of fried potatoes. He found that the pan variety was more easily broken down for assimilation than when deep fat was employed. The latter, however, dissolved within the alimentary tract more readily than the boiled type. Furthermore, he learned, by watching the progress of the contents of the rate of digestion. Now all this is quite in contrast with "authority." Volumes have been written on nutrition, and everywhere the dictum has been accepted--no fried edibles of any sort for children. A few will go so far as to forbid this style. of cooking wholly. Now and then an expert will be bold enough to admit that he uses them himself, the absence of discomfort being explained on the ground that he posses a powerful gastric apparatus. We can of course sizzle perfectly good articles to death so that they will be leathery and tough. But thorough heating, in the presence of shortening, is not the awful crime that it has been labeled. Such dishes stimulate rather than retard contractions of the gall bladder. Thus it is that bile mixes with the nutriment shortly after it leaves the stomach.

We don't need to allow our foodstuffs to become oil soaked, but other than that, there seems to be no basis for the widely heralded prohibition against this method. But notions become fixed. The first condemnation probably arose because an "oracle" suffered from dyspepsia(消化不良) which he ascribed to some fried item on the menu. The theory spread. Others agreed with him, and after a time the doctrine became incorporated in our textbooks. The belief is now tradition rather than proved fact. It should have been refuted long since, as experience has demonstrated its falsity.

This passage focuses on ______.

A．why the skillet is a handy piece of kitchen equipment

B．how the experts can mislead the public in the area of food preparation

C．the digestibility of fried foods

D．why fried foods have long been frowned upon

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第8题

______ late for class!

A.Don’t

B.Not be

C.Don’t be

D.Not