题目内容
As the earthquake happened, I ________ home.
- A.am going
- B.was going
- C.have gone
- D.am to go
寒假学与练系列答案阅读下列短文，从文后各题所给的四个选项中选出一个最佳答案 。
It was unusually quiet in the emergency room on December 25. I didn't think there would be any patients, sighing about having to work on Christmas. Just then five bodies 1 at my desk, a pale woman and four children．
"Are you all 2 ?" I asked．
"Yes," she said weakly and lowered her head．
But when they were asked to talk about their problems, things got a little 3 . Two of the children had headaches, but there was no 4 body language of holding the head.; two children had earaches, but only one could tell me which ear was affected. The 5 complained of a cough but seemed to work to produce it．
Something was wrong. I didn't say anything but 6 that it might be a little while 7 a doctor could see her. She 8 , "Take your time; it's warm in here．"
Then, I checked their chart. No address—they were homeless. The waiting room was warm.
I went back to the nurses' station and mentioned we had a 9 family in the waiting room. The nurses went into action immediately, much as we do when there's a 10 emergency. But this was a Christmas emergency．
We were all 11 a free meal on Christmas Day, so we claimed that meal and prepared a big dinner for our guests .We needed presents. We 12 from different departments candies, fruits and other things 13 that could be presents. Our team worked to meet the needs of a family who just wanted to be 14 on Christmas．
Later, as the family walked to the door to 15 , the four-year-old boy came running back, gave me a hug and whispered．"Thanks for being our angels today."
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Have you ever heard an echo of your voice?
An echo is a reflected(反射)sound. Stand in a very large, empty hall with nothing on the walls. Then shout. The sounds you make will hit the walls and come back to you. The walls reflect the sounds. These reflected sounds are called “echoes”.
We can use reflected sound to make sound travel farther. Hold a watch about fifty centimeters from your ear. You cannot hear it. The sound of the watch travels a short way in all directions. It does not travel as far as your ear. You can make it travel to your ear by using a roll of cardboard(纸板筒).
Make the roll of cardboard about fifty centimeters long. Put one end over your ear and hold the watch at the other. Now you can hear the watch because the sound has not gone in all directions. It is reflected down the roll to your ear.
A megaphone(喇叭筒)works in the same way. It makes sound travel farther. It reflects the sound into a beam which can travel a long way. In the ship, the sailor uses the megaphone to make his voice travel. Without the megaphone, his voice cannot travel far.
We use reflected sound in many ways. We use it to measure the depth of the sea, for example. Among the animals, bats and whales use reflected sound to tell them where they are and what things are near them.
1. Which is the right order of hearing our echo in a very large, empty hall?
a. We hear the reflected sound b. The sound returns to us
c. The sound hits the walls d. We make a sound
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A．c, b, a, d |
B．c, a, b, d |
C．d, c, b, a |
D．d, b, c, a |
2.. From the text we learn that __________ .
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A．reflected sound is useful only to blind people |
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B．people haven’t made use of reflected sound yet |
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C．bats use reflected sound to fly and get food |
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D．whales don’t use reflected sound as they live in the sea |
3. If you haven’t got a megaphone, ____ will help you to make your voice travel farther.
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A．a long piece of wood |
B．a roll of cardboard |
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C．a thin thread |
D．a long piece of silk |