Why would an animal kill itself? It seems a strange question, and yet it is one that has made some scientists curious for a long time. For there is a kind of animal called lemming（旅鼠）, that periodically killed themselves together, and no one knows just why!
The small creatures which live in the Scandinavian mountains, feed on a diet of roots and special insects and live in nests they dig underground. When their food supply is large, the lemmings live a normal and undisturbed life.
However, when the lemmings’ food supply becomes too low to support the population, a singular migration（迁徙）begins. The lemmings leave their nests in groups. Great numbers of them begin to travel across the Scandinavian plains, a journey that may last weeks. The lemmings eat everything in their path, continuing their long march until they reach the sea.
The reason for what follows remains unbelievable to naturalists. Upon reaching the coast, the lemmings do not stop but swim by the thousands into the sea. Most stay afloat only a short time before they tire, sink and drown.
A common theory for this mass self-killing is that the lemmings do not realize that the ocean is such a huge body of water in their cross-country journey, the animals must cross many smaller bodies of water, such as rivers and small lakes. They may think that the sea is just another such swimmable path to go through. But no final answer has been found to the strange happening.
1.The passage is mainly about______.
A. how lemmings find food
B. why animals kill themselves
C. the lemmings’ self-killing
D. the food supply in the Scandinavian mountains
2.A reason for the lemmings’ self-killing might be that they______.
A. go mad from a lack of food
B. hope to find fish for food
C. decide to reduce the population
D. think they can cross the sea
3.Why are scientists curious about the lemmings’ behavior?
A. Because they are the only animals that live in Scandinavia.
B. Because it is very unusual for animals to kill themselves.
C. Because of the amount of food they can eat on their march to the sea.
D. Because they can gather together in such huge numbers.
4.The underlined word “singular” means______.
A. unusual B. single C. wonderful D. common
Freda Bright says, "Only in opera do people die of love." It's true. You really can't love somebody to death. I've known people to die from no love, but I've never known anyone to be loved to death. We just can't love one another enough.
A heart-warming story tells of a woman 36 decided to ask her boss for a 37 in salary. All day she felt 38 and worried. Late in the afternoon she summoned the 39 to approach her employer. To her 40 , the boss agreed to a raise.
The woman arrived home that evening, finding a beautiful table 41 with their best dishes. Candles were softly glowing. Her husband had come home 42 and prepared a festive meal. She 43 if someone from the office had tipped him off, or ... did he just somehow know that she would not get _44 ?
She found him in the kitchen and told him the 45 news. They embraced and kissed, then sat down to the wonderful 46 Next to her plate the woman found a beautifully lettered note. It 47_ "Congratulations, darling ! I knew you'd get the raise! These things will tell you how much I love you."
Following the supper, her husband went into the 48 to clean up. She noticed that a second card had fallen from his pocket. Picking it off the 49 , she read: "Don' t worry about not getting the raise! You 50 it anyway! These things will tell you how much I love you. "
Someone has said that the measure of love is when you love without 51 . What this man feels for his 52 is total acceptance and love, 53 she succeeds or fails. His love celebrates her victories and soothes (抚慰，减轻) her 54 . He stands with her, no matter what life throws 55 their direction.
Upon receiving the Nobel Peace Prize, Mother Teresa said: "What can you do to promote world peace? Go home and love your family. "And love your friends. Love them without measure.
1.A. she B. who C. whom D. which
2.A.development B. promise C. raise D. post
3.A. nervous B. happy C. excited D. sorry
4.A. strength B. courage C. power D. tongue
5.A. regret B. disappointment C. horror D. delight
6.A. decorated B. fulfilled C. prepared D. set
7.A. early B. hurriedly C. happily D. angrily
8.A. asked B. understood C. wondered D. guessed
9.A. turned up B. turned over C. turned down D. turned in
10.A. shocking B. unimportant C. Unlucky D. good
11.A. discussion B. meal C. ceremony D. holiday
12.A. read B. wrote C. showed D. told
13.A. bedroom B. study C. kitchen D. garden
14.A. bed B. floor C. table D. plate
15.A. deserve B. own C. request D. remember
16.A. worry B. way C. method D. measure
17.A. employee B. wife C. friend D. colleague
18.A. whether B. if C. when D. how
19.A. happiness B. tears C. wounds D. duties
20.A. to B. from C. for D. in
—Would you mind answering some questions on shopping habits?
— ________．
A. Yes, with great pleasure
B. No, I am afraid I can't make it
C. Yes, it is worth the time
D. No, as long as it doesn't take long
Construction workers usually get ______ by the day.
A. pay B. paying C. paid D. to pay
It was not until he saw his mom _________.
A. did the little child stop crying
B. that the little child stopped crying
C. the little child stopped crying
D. when the little child stopped crying
In dealing with public relations, we should make every effort to prevent the _____ in personality.
A. contact B. contrast C. conflict D. connection
