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It was 1961 and I was in the fifth grade. My marks in school were miserable and, the thing was, I didn't know enough to really care. My elder brother and I lived with Mom in a dingy multi-family house in Detroit. We watched TV every night. The background noise of our lives was gunfire and horses' hoofs from "Wagon Train" or " Cheyenne" , and laughter from " I Love Lucy" or " Mister Ed". After supper, we'd sprawl on Mom's bed and stare for hours at the tube. But one day Mom changed our world forever. She turned off the TV. Our mother had only been able to get through third grade. But she was much brighter and smarter than we boys knew at the time. She had noticed something in the suburban houses she cleaned—books. So she came home one day, snapped off the TV, sat us down and explained that her sons were going to make something of themselves. "You boys are going to read two books every week, " she said. "And you're going to write me a report on what you read." We moaned and complained about how unfair it was. Besides, we didn't have any books in the house other than Mom's Bible. But she explained that we would go where the books were: "I'd drive you to the library." So pretty soon, there were these two peevish boys sitting in her white 1959 Oldsmobile on their way to Detroit Public Library. I wandered reluctantly among the children's books. I loved animals, so when I saw some books that seemed to be about animals, I started leafing through them. The first book I read clear through was Chip the Dam Builder. It was about beavers. For the first time in my life I was lost in another world. No television program had ever taken me so far away from my surroundings as did this verbal visit to a cold stream in a forest and these animals building a home. It didn't dawn on me at the time, but the experience was quite different from watching TV. There were images forming in my mind instead of before my eyes. And I could return to them again and again with the flip of a page. Soon I began to look forward to visiting this hushed sanctuary from my other world. I moved from animals to plants, and then to rocks. Between the covers of all those books were whole worlds, and I was free to go anywhere in them. Along the way a funny thing happened: I started to know things. Teachers started to notice it too. I got to the point where I couldn't wait to get home to my books. Now my elder brother is an engineer and I am chief of pediatric neurosurgery at John Hopkins Children's Center in Baltimore. Sometimes I still can't believe my life's journey, from a failing and indifferent student in a Detroit public school to this position, which takes me all over the world to teach and perform critical surgery. But I know when the journey began: the day Mom snapped off the TV set and put us in her Oldsmobile for that drive to the library.We can learn from the beginning of the passage that ————.

A. the author and his brother had done poorly in school
B. the author had been very concerned about his school work
C. the author had spent much time watching TV after school
D. the author had realized how important schooling was

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The fiddler crab is a living clock. It indicates the time of day by the color of its skin, which is dark by day and pale by night. The crab’s changing skin color follows a regular twenty-four hour cycle that exactly matches the daily rhythm of the sun.Does the crab actually keep time, or does its skin simply respond to the suns rays, changing color according to the amount of light that strikes it? To find out, biologists kept crabs in a dark room for two months. Even without daylight the crab’s skin color continued to change precisely on schedule.This characteristic probably evolved in response to the rhythm of the sun, to help protect the crab from sunlight and enemies. After millions of years it has become completely regulated inside the living body of the crab. The biologists noticed that once each day the color of the fiddler crab is especially dark, and that each day this occurs fifty minutes later than on the day before. From this they discovered that each crab follows not only the rhythm of the sun but also that of the tides. The crab’s period of greatest darkening is precisely the time of low tide on the beach where it was caught!The fiddler crab is like a clock because it changes color ——— .

A. in a regular 24-hour rhythm
B. in response to the sun’s rays
C. at low tide
D. every fifty minutes

大家都觉得这是无心之错,但我认为不是这样。The best translation is ­­­"_____".

A. Everyone thought it was an innocent mistake, but I don’t think so.
B. Everyone thought it was an innocent mistake, for all I care.
C. Everyone thought it was an innocent mistake, but I knew better.
D. Everyone thought it was an innocent mistake, but except for me.

Anna was reading a piece of science fiction, completely ___ to the outside world.

A. being lost
B. having lost
C. lost
D. losing

You should bring a waterproof jacket and strong boots in case of ___ weather.

A. rainy
B. stormy
C. wet
D. raining

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