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根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
It doesn't come as a surprise to you to realize that it makes no difference what you read or study if you can't remember it．You just waste your valuable time． 71 One dependable aid that does help you remember what you study is to have a specific purpose or reason for reading．
Why does a clerk in a store go away when your reply to her offer to help is, "No, thank you．I'm just looking．"? Both you and she know that if you aren't sure what you want, you are not likely to find it．But suppose you say instead, "Yes, thank you．I want a pair of sun glasses．" She says, "Right this way, please．"
__72_ If you choose a book, "just looking" for nothing in particular, you are likely to get just that—nothing．But if you do know what you want, you are almost sure to get it．Your reasons will vary; they will include reading or studying "to find out more about", "to understand the reasons for" and "to find out how"．
__73__ Before you start to study, you say to yourself something like this, "I want to know why Stephen Vincent Benet happened to write about America"．Because you know why you are reading or studying, you relate the information to your purpose and remember it better．
74 At least two important processes go on at the same time．As you read, you take in ideas rapidly and accurately．But at the same time you express your own ideas to yourself as you react to what you read．You have a kind of mental conversation with the author．
This additional process of thinking about what you read includes evaluating it, relating it to what you already know, and using it for your own purposes．__75__ One part of critical reading, as you have discovered, is distinguishing between facts and opinions．Facts can be checked by evidence, Opinions are one's own personal reactions．Another part of critical reading is judging sources．Still another part is drawing accurate inferences．
A．Maybe you have already discovered some clever ways to keep yourself from forgetting．
B．It is important for students to have a positive attitude to their study．
C．You remember better when you know what you' re reading．
D．In other words, a good reader is a critical reader．
E．It’s quite the same with your studying．
F．Reading is not one single activity．
G．This is the way it works．
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阅读理解
You have seen the moon many times. Does it look large or small? Does it look near or far away?
When you see the moon from the earth, the moon looks small. The moon is really very large, but not as large as the earth. It is much larger than the largest mountain on the earth.
Why does the moon look small when you see it from the earth?
The moon is very far away from the earth.
Things that are far away from you look smaller than things that are close.
Which looks smaller, the moon or the tree?
The moon looks smaller, even though it is really much larger than a tree. It looks smaller because it is far away from you and the tree is close to you.
What is moonlight?
You can see the sun and the stars in the sky. They give off light. The moon does not give off any light of its own. How then can you see the moon at night?
Light from the sun shines on the moon. Some of this light reaches the earth from the moon. The moon reflects (反射) sunlight, which now can be called moonlight.
How is light reflected? You can see how light is reflected if you hold a mirror in the sun. The mirror will reflect some sunlight.
The moon is something like a mirror. It reflects the light of the sun.
If you see light shining on the ball, half of the ball is in the light and the other half is dark.
The sun shines all the time. However, it shines on only half of the moon at a time. Like the earth, half of the moon is in sunlight. The other half is dark.
What part of the moon can you see? The only part of the moon you can see is the part that is in sunlight.
1．The moon is really very large, ________.
[ ]
A．but as large as the largest mountain on the earth
B．but not as large as the sun
C．but not as small as the earth
D．but as large as the earth
2．The moonlight is ________.
[ ]
A．the sun gives off light
B．the moon gives off light of its own
C．the sun and stars give off light
D．some of this light that comes from the sun and stars in the sky and reaches the earth from the moon
3．Like the earth, half of the moon is in sunlight. The other half is dark because ________.
[ ]
A．the sun shines all the time
B．we can see a part of the moon only
C．the only part of the moon we can see in the part that is in sunlight
4．The moon looks smaller than large mountains on the earth because ________.
[ ]
A．the moon is not a real object
B．large mountains are bigger than the moon
C．large mountains are closer than the moon
D．the sun shines on the moon
5．Which of the following is not true?
[ ]
A．The moon reflects sunlight all the time.
B．The sun shines all the time.
C．When we are not in sunlight, it is at night.
D．We can see the dark half of the moon.
查看习题详情和答案>>One day Burton took his children to the zoo. He told them to be ready at two o'clock, but they weren't all ready. Little Tommy could not find his shoes. He could find his brown shoes, but he couldn't find his black shoes, and he wanted to wear his black shoes to the zoo. At a quarter past two his brothers and sisters asked him to wear his brown shoes, so be put them on; and at last they were all ready to leave. Their mother waved goodbye and told them to enjoy their trip to the zoo. Then she sat down to read a book in the empty quiet house.
When they got to the zoo, Burton told the children to stay with him; he didn't want them to get lost in the zoo. Little Tommy asked his father to buy some food for the bears, but his father answered, “Look at that notice, Tommy. It tells us not to feed the animals.”
“Why does it tell us not to feed the animals?” asked Tommy.
“Because they get a lot of food already,” said Burton, “and people often try to give them the wrong food; that's bad for the animals.”
At three o'clock the dolphin（海豚）show began. All the Burtons wanted to see it, so Mr Burton bought seven tickets and took the children down to the dolphinarium（海豚馆）. The dolphins did a lot of tricks：they jumped up into the air and flew through hoops（大铁圈）over the water; they caught rubber rings with their noses; and they played “basketball” with red and yellow balls. The trainer blew his whistle when he wanted the dolphins to do something, and when they did it he gave them some fish.
“How can the dolphins do all these tricks? ”asked little Tommy.
“Because they are very intelligent（聪明的）,”said his elder brother. “They can understand when their trainer tells them to do something; and they like to do tricks（耍把戏）because their trainer always gives them some fish when they do them .”
“That's good,” said Tommy. “I like to do tricks, too. Why doesn't Father give me some candies（糖果）when I do them?”
(1) Burton ____ the house at two o'clock.
[ ]
A．wants to leave
B．wanted to leave
C．doesn't want to leave
D．didn't want to leave
(2) Tommy was looking for _____.
[ ]
(3) Burton told his children ______.
[ ]
A．to get lost in the zoo
B．to feed the bears
C．to enjoy their trip to the zoo
D．not to leave him
(4) _____ the animals the wrong food.
[ ]
A．People often try to give
B．People always want to give
C．Nobody tries to give
D．Nobody wants to give
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