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位错线是晶体中与在滑移面上的交界线，刃型位错的伯氏矢量与其位错线，螺型位错的伯氏矢量与其位错线，混合型位错的伯氏矢量与其位错线 __ 。

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NaCl晶体结构中，原子的配位数为______ 。

Fill in the blanks with the proper forms of the given expressions. appeal to, give rise to, be faced with, shed light on, expose … to, confer … on, be consumed by, make one’s mark, deprive … of, take on1. Since he became interested in chamber music, his life a new dimension. 2. Many parents cannot understand why their kids a passion for Black music, although they used to dance to it when they were young. 3. I thought I had many friends, but when I financial problems, there was no one I could turn to. 4. If a person adequate sleep, you cannot expect them to function properly. 5. I wish he could give up his beliefs, for which he ridicule. 6. The idea of going to Switzerland for the winter vacation and spending a whole month skiing really me. 7. John worked with us for only two years, but he obviously on the office. 8. We trusted him so much that we him the role of “our resident tutor.” 9. I had been working on the engine for two hours but couldn’t fix it, so I asked Bill to have a look, hoping that he could the problem. 10. Covid-19 suddenly struck again in Beijing, which hesitation about letting students go back to the classroom.

Fill in the blanks with the appropriate forms of the given words.maturity, obsessive, variability, sensation, gratifying, institution, application, discern, deceptively, constitution1. Many women have come to separatism, which might be a reaction to the brutality and sexism of men. 2. We cannot expect to arrive at an all-embracing solution, for there is never a single method that is universally . 3. The process of linguistic seems to occur more quickly in girls than in boys. 4. The performance of the laboratories doing the testing means that the results cannot be relied on. 5. It requires a(n) eye to identify the subtle connections between the two pictures. 6. I don’t think one who seems incapable of facing conflicts is a suitable candidate for the position of public relations manager. 7. The revelations by anonymous informants greatly damaged his reputation. 8. The problem began when his love for her turned to . 9. According to the judge, this was more a case of unconscious neglect than one of calculated . 10. Of all the students who took part in TEM4, only one failed. The pass rate was high.

Choose a suitable word to complete each of the following sentences.1. In his speech, the President expressed his expectation for all parties to work together in a and responsible manner to solve the problem. (decided, determined)2. Can you imagine that Tony, a married man, used to be in trouble with the police when he was young? (respectable, respectful)3. I was shocked by the sheer of such plans as the selective employment tax. (ridicule, ridiculousness)4. Why should you wake me up at 5 am? Can’t we have the dialogue at a more time? (civilized, cultivated)5. She finds it difficult to stand living under conditions for long periods, which is necessary for extensive field research. (adversary, adverse)6. He says he is a good dancer, but I’m afraid he has got no sense of . (rhyme, rhythm)7. Shakespeare is great in that he gives to his characters and preserves each individuality throughout each play. (variety, variation)8. Our excitement was increasingly as we waited for the teacher to announce the winners in the Reading Contest. (intense, intensive)9. A social worker said that boredom and keeping bad had led him to steal. (companion, company)10. I love Bill Bryson, because he has at his command both biting and light-hearted humour. (irony, satire)