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Directions: There are 10 blanks in the following passage. For each numbered blank, there are 4 choices marked A, B, C and D. One summer day my father sent me to buy wire for our farm. At 16, I liked (76) better than driving our truck, (77) this time I was not happy. My father had told me I’d have to ask for credit at the store. Sixteen is a (78) age, when a young man wants respect, not charity. It was 1976, and the ugly (79) of racial discrimination was (80) a fact of life. I’d seen my friends ask for credit and then stand, head down, while the store owner (81) whether they were "good for it." I knew black youths just like me who were (82) like thieves by the store clerk each time they went into a grocery. My family was (83) . We paid our debts. But before harvest, cash was short. Would the store owner (84) us. At Davis’s store, Buck Davis stood behind the cash desk, talking to a farmer. I nodded (85) I passed him on my way to the hardware shelves. When I brought my purchases to the cash desk, I said carefully, "I need to put this on credit."
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Passage Three Parents should stop blaming themselves because there’s not a lot they can do about it. I mean the teenager (十几岁的孩子) problem. Whatever you do or however you choose to deal with it, at certain times a wonderful, reasonable and helpful child will turn into a terrible animal. I’ve seen friends deal with it in all kinds of different ways. One strict mother insisted that her son should stand up whenever anyone entered the room, open doors and shake hands like a gentleman. I saw him last week when I called round. Sprawling himself (懒散地躺) on the sofa in full length, he made no attempt to turn off the loud TV he was watching as I walked in, and his greeting was no more than a quick glance at me. His motherwas ashamed. "I don’t know what to do with him these days," she said. "He’s forgotten all the manners we taught him." He hasn’t forgotten them. He’s just decided that he’s not going to use them. She confessed (坦白) that she would like to come up behind him and throw him down from the sofa onto the floor. Another good friend of mine let her two daughters climb all over the furniture, reach across the table, stare at me and say, "I don’t like your dress; it’s ugly. " One of the daughters has recently been driven out of school. The other has left home. "Where did we go wrong" her parents are now very sad. Probably nowhere much. At least, no more than the rest of that unfortunate parents. What is the author’s opinion about the sudden change in teenage children
Directions: There are 4 passages in this part. Each of the passages is followed by 5 questions or unfinished statements. For each of them there are 4 choices marked A, B, C and D.Passage One SYDNEY: As they sat sharing sweets beside a swimming pool in 1999, Shane Gould and Jessicah Schipper were simply getting along well, chatting about sport, life and "anything else that came up." Yet in Sydney next month, they will meet again by the pool, and for a short time the friends will race against each other in the 50-meter butterfly (蝶泳) in the Australian championships at Homebush Bay. Gould, now a 47-year-old mother of four, has announced she will be making a return to elite competition (顶级赛事) to swim the one event, having set a qualifying time of 30.32 seconds in winning gold at last year’s United States Masters championships. Her comeback comes 32 years after she won three golds at the Munich Olympics. Schipper, now a 17-year-old from Brisbane with a bright future of going to Athens for her first Olympics, yesterday recalled her time with Gould five years ago. "I was at a national youth camp on the Gold Coast and Shane had come along to talk to us and watch us train," Schipper explained. "It seemed as if we had long been good friends. I don’t know why. We just started talking and it went from there." "She had a lot to share with all of us at that camp. She told us stories about what it was like at big meets like the Olympics and what it was like to be on an Australian team. It was really interesting. " Next time, things will be more serious. "I will still be swimming in the 50m butterfly at the nationals, so there is a chance that I could actually be competing against Shane Gould," said Schipper, who burst onto the scene at last year’s national championships with second places in the 100m and 200m butterfly. What is the passage mainly about
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8031单片机有4个口，其中______口可以直接应用于I/O口。
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