B
What weighs 3500 pounds(1600kg)and lived 60 million years ago?Are you thinking of
dinosaurs?Guess again!You don,t have to go to a museum to see these creatures．They are alive
and swimming in the warm coastal waters of Florida．
Manatees(海牛)have lived a peaceful existence in the warm waters of Florida for 60
million years．However，they are now an endangered species．This means that if humans don,t do
something to save them，they will soon go the way of dinosaurs．
Humans have made life very difficult for manatees．One big danger that humans have
introduced is the speedboat．Because manatees are mammals．they need to come to the surface to breathe about every 5 to 6 minutes．This means that they are in constant danger of being caught in the propellers(螺旋桨)of speedboats．And boating aceidents are the greatest cause of death for them．
Manatees are in extra danger when they are in their sleeping or“torpor”state．They still
have to come to the surface for the air，but sometimes they are too sleepy to avoid the danger of approaching boats．
Another danger for manatees is the pollution that humans produce．Due to human pollution，
a deadly plant called red tide had increased greatly in the Gulf of Mexico．The plant，or algae，
t11riVes(繁茂)on pollution．It wiped out nearly 20 percent of the total manatee population on
earth．
Humans can help to save manatees。The government has established boating speed limits to
give the manatees．a chance to escape approaching speedlsoats．Everyone can help by cutting
down on waste and pollution to protect the waters for the manatees．
One famous singer，Jimmy Buffet，has helped save the manatees．He co-founded the Save the Manatee Club(SMC)．SMC had begun an adoption(收养)program for the manatees．For a fee，sponsors(资助者)can name a manatee．Donations are used to help protect the manatees and their habitat．
45．The manatee is the kind of animal that___________．
A．1ikes living in the cold waters of Florida B．will die out if not protected in time
C．call dive in the deep sea for hours D．is the biggest living animal on earth
46．Why is it dangerous for manatees to be in a torpor state?
A．Because they come to the snlface to breathe，and that is when they are hunted．
B．Because they eat deadly algae，and this makes them too sick to avoid danger．
C．Because they live in groups and therefore they are easily hurt by passing boats．
D．Because they are sleepy when they surface，so they can,t avoid approaching boats．
47．The death of the manatees is largely due to__________．
A．human hunting B．human pollution
C．speedboat accidents D．deadly plants
48．To help protect manatees，people should_________．
A．never go speed boating in their living habitat
B．keep the waters of Florida free from pollution
C．have manatess named by sponsors without a fee
D．wake manatees up from their torpor state
阅读快车系列答案科目：高中英语 来源： 题型：
After Yang Li Wei succeeded in circling the earth, _______ our astronauts desire to do is walk in space.
A. where B. what C. that D. How
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科目：高中英语 来源： 题型：
After Yang Li Wei succeeded in circling the earth, _______ our astronauts desire to do is walk in space.
A. where B. what C. that D. How
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科目：高中英语 来源： 题型：
After Yang Li wei succeeded in circling the earth, _______ our astronauts desire to do is walk in space.
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Some recent surveys show that the health conditions of many white collar employees and office workers are rather critical. Death cases among white collar employees and office workers are increasing year by year and these cases are generally believed to have been caused by overwork and spend little time taking rest or doing exercise.
If their offices are within the distance of half an hour’s walk, some office workers now choose to go to work on foot. Ms. Deng, who works in a foreign enterprise in Beijing, has been walking to her office for more than six months now. “I usually have a tight work schedule and can’t find time to do exercise. So I choose to walk to work.” As she said, if the office is not far from home, most women would like to go to work on foot. Walking is good for their health and can help them to keep good figures as well.
Apart from walking to office, one can also find time to do exercise when one is at work. The simplest way is to abandon the lift. Mr. Wei, who works in the Passenger Service Department at Shenzhen Airlines, is one of such men who frequently climb stairs to his office. “I only use the lift whenever I’m with my colleagues or my boss. Otherwise, I would climb stairs instead of taking the lift.”
In addition, some office workers try to find time to go to a gym at the end of a day. Ms. Sang works in a law firm in Shenzhen. She goes to the gym several times a week when she has the time. “I go to the gym every weekend. During the weekdays, I will also go there whenever I have the time.” Ms. Sang and her husband both have a gym membership card for a whole year. The cards cost them 3,000 yuan. However they think it’s worth it.
41. Why are death cases among white collar employees and office workers increasing year by year?
A. Because they overwork for a long time.
B. Because they are too busy to have time for a rest.
C. Because they hardly have time to do exercise after work.
D. All of the above.
42. How many ways that office workers keep healthy are mentioned in the passage?
A. 3 B. 4 C. 5 D.6
43. Which of the following sentence can be added between Paragraph 1 and Paragraph 2?
A. Then, what shall office workers do next to prevent death cases?
B. What will happen to office workers?
C. In order to keep themselves healthy, some office workers now take measures as follows:
D. Working on foot is the best way for office workers.
44. The best title of the passage is ______.
A. Health Is Very Important
B. Office Workers Try to Keep Healthy
C. How to Keep Healthy
D. Office Workers’ Trouble
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科目：高中英语 来源： 题型：
After Yang Li wei succeeded in circling the carth, _______ our astronauts desire to do is walk in space.
A. where B. what C. that D. how
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