-
Bats are the only mammals(哺乳动物) which can fly properly. Other flying mammals have wings of thin skin which cover their sides between their front and back legs. They can only fly from tree to tree, but they cannot change direction when they want to.
All bats fly at night and most of them hunt for flying insects(昆虫), such as bees. The common bat finds its food by making a constant noise that the human ear cannot hear. The bat listens for echoes(回声) of the noise as it bounces(反射) off the insects showing the bat their position.
The Fruit bat feeds on many different kinds of fruit. It does not use echoes but instead has very large, special eyes to see even in low light. The largest Fruit bat has a wing length of 0.75 meters. The Vampire bat drinks the blood of large mammals, and a few bats catch fish, birds and even other bats.
1. Some flying mammals are not real flyers because _____.
A. they do not have wings B. their wings are too thin
C. they have skin between their legs D. they cannot turn around in the air
2. When common bats hunt for food they _____.
A. use echoes to kill the insects B. make a noise to draw insects to them
C. produce a sound and listen to the echoes D. listen noise made by the insects
3. Unlike other bats, the Fruit bat _____.
A. can see very well B. eats fruit and fish
C. has very long wings D. has excellent hearings
4.The word "it" in the second paragraph refers to _____.
A. the bat B. the echo C. the noise D. the insect
难度: 中等查看答案及解析
-
Islamabad, Pakistan, June 22nd---Two mountain climbers surprisingly survived (幸免于) a fall of over 500 feet on the 25,530-foot mountain in Pakistan, Saturday. The two climbers were climbing an ice-covered wall of the mountain when they suddenly lost their footing and fell about 560 feet to a narrow snow-covered ledge(悬崖突出部分) below. “We were lucky that ledge was there,” said the climbers, “Otherwise, we would have fallen over 2,000 feet.” If the ledge had not been there, the two climbers almost certainly have met their death. “It’s a wonder,” the climbers said, “that we landed on the ledge, and the snow was loose enough to cushion(缓冲) our fall. We’re thankful that we survived.”
When a reporter asked them if they planned to give up mountain climbing after their narrow escape(九死一生), the two climbers replied, “Not at all. We’ll be going back up there just as soon as we get out of the hospital.”
1. The mountain climbers survived because _____.
A. they had fallen only 500 feet down B. of the ledge and the loose snow on it
C. of their strong bodies D. they were very good climbers
2. If there had not been the snow-covered ledge, _____.
A. they wouldn’t have fallen down B. they would have them wounded
C. they would have lost their lives D. they would fall into the deep snow
3. How high was the ledge from the foot of the mountain?
A. 2,560 feet high B. 2,000 feet high
C. 25,530 feet high D. More than 1,400 feet high
4. Choose the right order which shows what happened to the two climbers.
a. talked with a reporter b. lost their footing
c. was sent to a hospital d. fell to a ledge
e. started to climb an ice-covered wall
A. b-d-c-e-a B. e-d-b-c-a C. e-b-d-c-a D. a-c-b-d-e
难度: 中等查看答案及解析
-
Harry’s father bought a magazine which gave its readers information about all kinds of products and helped them make the best choice while buying.
Harry borrowed his father’s magazine when he needed a new computer. “I’ll read it and choose the best one.” He said.
The magazine described these computers.
The DGT PC450
The BNK 975XF: AT $3,200
The CGP 8PT
This computer comes with lots of good software. However it does not have much memory and is rather slow. At $2,850 it’s not very good value for money.
This is the most expensive computer we tested. However it is also the most reliable (可靠的). It is very fast and has lots of memory. It is worth the extra money if you can afford it.
At only $1,900. It has lots of memory and is quite fast. However it broke down twice while we were testing it and we cannot recommend (建议) it for reliability.
Harry chose the BNK 975XF. “I know it’s expensive,” he said, “but it will be with me for a long time and do everything I want it to do.”
1. Harry wants to buy a computer, so he borrowed ___________ from his father.
A. a magazine about all kinds of products B. a computer magazine
C. a shopping book D. a book about all kinds of computers
2. ____________ doesn’t have much memory and is rather slow.
A. The BNK 975XF B. The DGT PC450
C. The CGP 8PT D. Harry’s computer
3. The CGP 8PT is _____________ among the three kinds of computers.
A. the fastest B. the most expensive C. the cheapest D. the slowest
4.Harry chose the BNK 975XF because _________.
A. it is the most expensive B. it has lots of good software
C. it has much memory D. it would work for him for a long time
难度: 中等查看答案及解析
-
BRITAIN is a popular tourist place. But tours of the country have pros and cons.
Good news
Free museums: No charge for outstanding collections of art and antiquities(古董).
Pop music: Britain is the only country to rival(与……比敌)the US on this score.
Black cabs: London taxi drivers know where they are going even if there are never enough of them at weekends or night.
Choice of food: Visitors can find everything from Ethiopian to Swedish restaurants.
Fashion: Not only do fashion junkies love deeply and respect highly brand names such as Vivienne Westwood, Alexander McQueen; street styles are justly loved, too.
Bad news
Poor service: “It’s part of the image of the place. People can dine out on the rudeness they have experienced,” says Professor Tony Seaton of Luton University’s International Tourism Research Center.
Poor public transport: Trains and buses are promised to defeat the keenest tourists, although the over-crowded London tube is inexplicably(不可解的) popular.
Lack of language: Speaking slowly and clearly may not get many foreign visitors very far, even in the tourist traps.
Rain: Still in the number one complaint.
No air-conditioning: So that even splendidly hot summer become as unbearable as the downpours.
Overpriced hotels: The only European country with a higher rate of tax on hotel rooms is Denmark.
Licensing hours: Alcohol is in short supply after 11 p.m. even in 24-hour cities.
1.What do we learn about pop music in Britain and the US through this passage?
A. Pop music in Britain is better than that in the US.
B. Pop music in Britain is as good as that in the US.
C. Pop music in Britain is worse than that in the US.
D. Pop music in Britain is quite different from that in the US.
2. When is alcohol not able to get?
A. At 9:00p.m. B. At 10:00p.m C. At 11:00p.m. D. At 12:00p.m.
3.Which of the following is true according to the passage?
A. You have to pay to visit the museums. B. It’s very cheap to travel by taxi there.
C. You cannot find Chinese food there. D. The public transport is poor there.
难度: 中等查看答案及解析