问题
判断题
线切割加工凹模，为了防止应力形，应加工穿丝孔；加工凸模则不用穿丝孔。
答案
参考答案：错
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线切割加工凹模，为了防止应力形，应加工穿丝孔；加工凸模则不用穿丝孔。
参考答案：错
| 下面有六段电视节目内容的解说词，请将其中序号填在相应的节目名称前。 | |
| A. When you need help for your homework, go to the library. You may find newspapers, and big dictionaries there. They can always help you. B. For families with children, an important problem is stopping the children from watching TV to do their homework. C. Even if you could buy the world, you couldn't buy a happy family, good friends, or knowledge D. The Lost World is an exciting American film. People, especially (尤其) school students, may like it. E. A child in Hainan fell from the seventh floor but wasn't hurt at all. F. People might grow plants and vegetables in the sea in about 50 years.
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