The sun is setting on a summer night． At the entrance to a deep, dark cave, a few bats fly out and begin swirling high up into the air．More and more of the small, furry creatures appear．Within a few minutes, a whole river of bats is pouring out of the cave, and they keep coming, millions and millions of them．

       Sound like a scary horror movie? Believe it or not, this scene takes place every night, all summer long, at Bracken Cave in Texas, where 20 million bats fly outside to feed on insects．"It is magical," says Jim Kennedy of Bat Conservation International in Austin Texas．"It is one of the most majestic（壯麗的）  animal movements on the planet．"

       Every March or April, Mexican Free-tailed bats migrate up to 1,000 miles （1609 kilometers） from their winter home in Mexico to this cave, where they raise their young．Soon after they arrive, each mother gives birth to one pup．As many as 500 baby bats live crammed into one square foot （30．48 cubic centimeters）of space, and all those bodies create nice warm temperatures to keep them cozy and comfortable．If you've ever lost sight of your parents on a crowded playground, you may be wondering how mother bats recognize their children．They use their sense of smell to tell which pup is theirs when it is．time for the babies to nurse．

       The cave, a quiet place in winter, is full with life all summer-and not just with bat residents．Bat waste soon covers the floor, providing food for tiny organisms（生物體） like bacteria and fungi（真菌類）．And then there are the bugs．

       When the adult bats leave the cave at night to feed, they are helping humans．They eat tons of insects in a single night, including many pests that eat farmer's crops． And they get rid of mosquitoes, too． 

66．In the first paragraph, the author          .

       A．provides some information about bats         B．describes the movement of bats

       C．a(chǎn)dvises the reader to watch bats          D．stresses the danger of bats in summer

67．By saying “Sound like a scary horror movie?” what does the author mean?

       A．Bats are better horrible characters in films．  B．People tend to feel afraid of bats．

       C．The above scene is somewhat unbelievable．D． The cave mentioned is full of adventure．

68．According to the passage, the reader possibly expects that           ．

       A．no people know how many bats live in Bracken Cave．

       B．a(chǎn) bat mother would have trouble finding her own baby．

       C．bat waste causes much harm to the human environment．

       D．farmers will never have a good harvest without the bats．

69．Which of the following is TRUE about the bats?

       A．They are well protected by farmers．

       C．They benefit from some tiny organisms．

       B．They smell better than other animals．

       D．They travel from Mexico to America yearly．

70．From the second paragraph, we can know Kennedy's opinion of the bat's flying in group is        .

       A．mysterious         B．frightful             C．crazy               D．enjoyable

練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目：高中英語(yǔ) 來(lái)源：湖南省衡陽(yáng)八中2010屆高三第四次月考、英語(yǔ)試卷 題型：050

閱讀理解

　　In the atmosphere, carbon dioxide acts rather like a one-way mirror or the glass in the roof of a greenhouse which allows the sun's rays to enter but prevents the heat from escaping．

　　According to a weather expert' s prediction, the atmosphere will be 3℃warmer in the year 2050 than it is today, if man continues to burn fuels at the present rate．If this warming up took place, the ice caps in the poles would begin to melt, thus raising sea level several metres and severely flooding coastal cities．Also, the increase in atmospheric temperature would lead to great changes in the climate of the northern hemisphere(北半球), possibly resulting in an alteration of the earth's chief food growing zones．

　　In the past, concern about a man-made warming of the earth has concentrated on the Arctic because the Antarctic is much colder and has a much thicker ice sheet．But the weather experts are now paying more attention to West Antarctic, which may be affected by only a few degrees of warming, in other words, by a warming on the scale that will possibly take place in the next fifty years from the burning of fuels．

　　Satellite pictures show that large areas of Antarctic ice are already disappearing．The evidence available suggests that a warming has taken place．This fits the theory that carbon dioxide warms the earth．

　　However, most of the fuel is burnt in the northern hemisphere, where temperatures seem to be falling．Scientists conclude , therefore, that up to now natural influences on the weather have gone beyond those caused by man．The question is：Which natural cause has most effect on the weather?

　　One possibility is the variable behavior of the sun．Astronomers at one research station have studied the hot spots and "cold" spots(that is, the relatively less hot spots)on the sun．As the sun rotates(使旋轉(zhuǎn)), every 27.5 days, it presents hotter or "colder" faces to the earth, and different aspects to different parts of the earth．This seems to have a considerable effect on the distribution of the earth's atmospheric pressure, and consequently on wind circulation．The sun is also changeable over a long term：its heat output goes up and down in cycles, the latest trend being downward．

　　Scientists are now finding shared relations between models of solar weather interactions and the actual climate over many thousands of years, including the last Ice Age．The problem is that the models are predicting that the world should be entering a new Ice Age and it is not．One way of solving this theoretical difficulty is to assume a delay of thousands of years while the solar effects overcome the inertia(慣性)of the earth's climate．If this is right, the warming effect of carbon dioxide might thus be serving as a useful opposed balance to the sun's fading heat．

(1)

It can be concluded that a concentration of carbon dioxide in the atmosphere would ________．

[　　]

A．

mean a warming-up in the Antarctic

B．

raise the temperature of the earth' s surface

C．

prevent the sun's rays from reaching the earth's surface

D．

explain the cause of great changes in the climate in the northern hemisphere

(2)

The article was written to explain ________．

[　　]

A．

the greenhouse effect

B．

the solar effects on the earth

C．

the causes affecting weather

D．

the models of solar-weather interactions

(3)

Although the fuel consumption is greater in the northern hemisphere, temperatures there seem to be falling．This is ________．

[　　]

A．

mainly because the levels of carbon dioxide are rising

B．

partly due to changes in the output of solar energy

C．

possibly because the ice caps in the poles are melting

D．

only due to the effect of the inertia of the earth' s climate

(4)

On the basis of their models, scientists believe the opinion that ________．

[　　]

A．

the climate of the world should be becoming cooler

B．

the new Ice Age will be delayed by the greenhouse effect

C．

the man-made warming effect helps to increase the solar effects

D．

it will take thousands of years for the inertia of the earth's climate to take effect

(5)

If the assumption about the delay of a new Ice age is correct, ________．

[　　]

A．

ice would soon cover the northern hemisphere

B．

the greenhouse effect could work in favor of the earth

C．

the best way to overcome the cooling effect would be to burn more fuels

D．

the increased levels of carbon dioxide in the atmosphere could warm up the earth even more quickly

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：2011年甘肅省河西部分普通高中高三第一次聯(lián)考英語(yǔ)卷 題型：閱讀理解

Adult butterflies use their senses of sight, touch, hearing, smell, and taste to survive in the world, find food and mates, lay eggs in an appropriate place, migrate, and avoid hungry predators.
Sight
Butterflies have large, compound (multifaceted) eyes, which allow them to see in all directions without turning their heads. Like most insects, butterflies are very nearsighted, so they are more attracted to a large stand of flowers rather than individual plants. Butterflies do not "see" colors such as red, green, and yellow, but sense polarized（偏振的） light, which indicates the direction the sun is shining, as well as ultraviolet light, which is present on many flowers and guides butterflies to nectar （花蜜）sources.
Smell
Butterflies have a very well-developed sense of smell, but it's not in their nose (since they don't have one). Sense receptors located in their antennae, feet, and many other parts of the body help butterflies find food (usually flower nectar), and mates (the female smells the male's pheromones).
Taste
Butterfly's feet have sense organs that can taste the sugar in nectar, letting the butterfly know if something is good to eat or not. Some females also taste host plants in order to find appropriate places to lay their eggs. Adult butterflies and moths feed using a proboscis, a long, coiled tube. Butterflies force blood into the tube to straighten it out, allowing them to feed. Butterflies get all their food from this tube.
Hearing
Butterflies don't have ears. Instead they "hear" sounds through their wings by sensing changes in sound vibrations.
Butterflies may possess senses we don't even know about yet because their anatomy is very different than ours, and therefore difficult to understand when perceived through our own human senses.
【小題1】From the passage we can know that butterflies can see_____

A．thing behind themB．thing in the distance
C．most bright colorsD．flower nectar from a distance
【小題2】 Butterflies can easily find food resources by using their______.
A．sense organs of sight and smellB．sense organs of sight and taste
C．sense organs of smell and hearingD．sense organs of smell and taste
【小題3】 How do butterflies feed themselves?
A．by using their feetB．by using a tube.
C．by using sense receptorsD．by using their wings.
【小題4】What is the passage mainly about?
A．The food sources of butterflies.B．The habits of butterflies.
C．The unusual body of butterflies.D．the sense of butterflies.

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：江蘇省南京六中2009--2010學(xué)年度高一第二學(xué)期期中考試英語(yǔ)試卷 題型：閱讀理解


IV. Reading comprehension 閱讀理解 2’ * 10 = 20’
A
The sky usually looks light blue. But if you went to the top of the highest mountain, where there is less air between you and the sun to scatter (使……分散，散射) the sunlight, the sky would be deep, dark blue. And if you rode in a rocket high above the earth, where there is no air at all to scatter the sunlight, the sky would be so dark that it would be black. Sometimes the sky doesn't look blue. At sunrise and sunset, the light from the sun sometimes is scattered in such a way that you see red, orange, and other colors in the sky.
56. The sky usually looks light blue because _____.
A. the sun is light and blue
B. the air is light and blue
C. the air scatters the sunlight
D. the sunlight is blue
57. The sky looks dark blue when _____.
A. there is less air between you and the sun
B. there is high mountain
C. the mountain is highest
D. you climb a mountain
58. The sky looks black if ______.
A. you ride in a rocket
B. the rocket is high in the sky
C. the rocket is high above the earth
D. there is no air to scatter the sunlight
59. Sometimes the sky doesn't look blue because ______.
A. the sun is rising
B. the sun is setting
C. the air has different colors
D. the light from the sun is scattered in a different way
60. A good title for this passage would be _______.
A. The Sky Looks Blue
B. Why the Sky Looks Colorful
C. The Beautiful Sunlight
D. Something About the Air

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：2011-2012學(xué)年河北省衡水中學(xué)高一上學(xué)期二調(diào)考試英語(yǔ)試卷 題型：閱讀理解

Have you ever been to the beautiful country of Holland and its capital Amsterdam? Anyone who has traveled to Amsterdam would probably agree on one thing: Amsterdam’s story is a tale of two cities — one during the day and a completely different one at night.
When the sun is up, this largest city in the Netherlands sits quietly on the Amstel River. You can rent a bicycle, visit the Van Gogh or Anne Frank museum, or take a water taxi. But when the sun goes down, the partying begins. In the big clubs and in the coffee shops, tourists gather to talk politics and smoke.
Several areas of the city clearly show the two worlds that rule Amsterdam. And they’re all within a short cab ride of each other. For example, Dam Square attracts daytime sightseers to its festivals, open markets, concerts and other events. Several beautiful and very popular hotels can be found there. And there’s the Royal Palace and the Magna Plaza shopping mall. But at night party-seekers come to the square. Hip hop or funk music (瘋狂音樂(lè)) is heard there. So if you come, be ready to dance. The clubs don’t shut down until 4 am.
And while you’re there, check out the various inexpensive ways to tour the city. Don’t worry about getting lost. Although Dutch is the official language, most people in Amsterdam speak English and are happy to help you with directions. And you’ll notice that half the people walking around in the streets are on bicycles they rent. Amsterdam also has a well-planned canal system. For about 10 dollars, you can use the canal bus or a water taxi to cruise (巡游) the “Venice of the North”.
The city has a historic past. One impressive (印象深刻的) place to visit is the Anne Frank House on Nine Street. It was there that the young Jewish girl wrote her famous diary during World War II. Visitors can view Anne’s original diary and climb behind the bookcase to the room where she and her family hid from the Nazis for two years.
【小題1】 What means of transport is not available to visitors in Amsterdam?

A．A carriage.B．A bicycle.
C．A canal bus.D．A water taxi.
【小題2】What can you learn about by visiting the Anne Frank House?
A．The wonderful past of Amsterdam.
B．The experience of a beautiful girl survivor.
C．The life of Jewish during World WarⅡ.
D．The suffering of the Dutch in wars.
【小題3】The passage is intended to _______.
A．call up people’s memories of World WarⅡ
B．tell readers what A Tale of Two Cities is about
C．instruct visitors what to do and see in Holland
D．offer readers some information about Amsterdam
【小題4】This passage is most likely taken from _______.
A．a(chǎn) private diaryB．a(chǎn) test paperC．a(chǎn) travel journeyD．a(chǎn) history book

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：浙江省瑞安中學(xué)2009---2010學(xué)年度高一下學(xué)期期中考試英語(yǔ)試卷 題型：填空題


第三節(jié)：?jiǎn)尉涓腻e(cuò)（每小題1分，滿分5分）
在錯(cuò)的詞下劃一橫線，在該行右邊橫線上寫(xiě)出改正后的詞(每句均有一個(gè)錯(cuò)誤)。
81. What the earth travels around the sun is known to us all.                              81. _______
82. The ruler that he bought yesterday was lain on the table.                             82.________
83. He returned in the afternoon of his birthday.                                            83. ________
84. He spoke too rapidly that we couldn’t clearly understand him.                   84. _________
85. He shouldn’t have gone abroad, for I saw him in the part this morning.             85. _________

查看答案和解析>>

同步練習(xí)冊(cè)答案