单选题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. One report 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.

单选题______ anything about the accident, he went to work as well.

单选题After all , ______ her faults are, she is Arnold's mother.

单选题Children ______ by their parents are allowed to enter the stadium.

单选题The teacher stressed again that the students should not ______ any important details while retelling the story. A. bring out B. let out C. leave out D. make out

单选题{{B}}Passage 1{{/B}} After a busy day of work and play, the body needs to rest. Sleep is necessary for good health. During this time, the body recovers from the activities of the previous day. (76) {{U}}The rest that you get while sleeping enables your body to prepare itself for the next day.{{/U}} There are four levels of sleep, each being a little deeper than the one before. As you sleep, your muscles relax little by little. Your heart beats more slowly, and your brain slows down. After you reach the fourth level, your body shifts back and forth from one level of sleep to the other. Although your mind slows down, from time to time you will dream. Scientists who study sleep state that when dreaming occurs, your eyeballs begin to move more quickly (although your eyelids are closed). This stage of sleep is called REM, which stands for rapid eye movement. (77) {{U}}If you have trouble falling asleep, some people recommend breathing very slowly and very deeply.{{/U}} Other people believed that drinking warm milk will help make you drowsy. There is also an old suggestion that counting sheep will put you to sleep!

单选题—Hey,you look concerned. ______? —The final exam. I"m not fully prepared yet.

单选题Hardly they had got to the bus stop when the bus suddenly pulled away .

单选题There are many older people in the world and there will be many more. A little-known fact is that over 60 percent of the older people live in developing countries. According to the World Health Organization, by 2020 there will be 1 billion, with over 700 million living in developing countries. It is a surprising fact that the population ageing is particularly rapid in developing countries. For example, it took France 115 years for the proportion of older people to double from 7 percent to 14 percent. It is estimated to take China a mere 27 years to achieve this same increase. What are the implications of these increased numbers of older folk? One of the biggest worries for governments is that the longer people live, the more likelihood there is for diseases and for disability (残疾). Attention is being paid to the need to keep people as healthy as possible, including during old age, to lessen the financial burden on the state. Another significant problem is the need for the younger generations to understand and value the older people in their society. In some African countries, certainly in Asia, older people are respected and regarded as the ones with special knowledge. Yet traditions are fading away daily, which does not ensure the continued high regard of older people. As society changes, attitudes will change. Much needs to be done to get rid of age discrimination (歧视) in employment. Life-long learning programs need to be provided to enable older people to be active members in a country"s development. Social security policies need to be established to provide adequate income protection for older people. Both public and private schemes are vital in order to build a suitable safety net.

单选题Choose the appropriate meaning for the word "inflections" in Line 4 of Paragraph 2.

单选题If it ______ rain tomorrow , we'll have the party outside.

单选题The Johnsons must have been out, ______ there is no light which can be seen in their house tonight. A. for B. because C. since D. as

单选题There are 40 teachers in this school, ten of whom are _____

单选题When Mr. Jones gets old, he will ______ over his business to his son. A. take B. think C. hand D. get

单选题______ English, she is studying Japanese and French.

单选题______ on the New World, he felt like crying.

单选题"Those shirts are very expensive.""Do you know ______ ?"

单选题The old man wished his son to take his duties __________

单选题With the guide ______ the way, we set off on foot into the dark night.