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- 1已知各项均为正数的等比数列{an}的前n项和为Sn,若a3=18,S3=26,则{an}的公比q= _ .
- 2有一个直角三角形的两条直角边分别为30厘米和40厘米,它的斜边是50厘米,斜边上的高度有多少厘米?
- 3will future is the we challenge what face the in 连词成句
- 4There's got to be a way of getting to the M-5.There's got to be a way!怎么翻译?
- 5“You have already sung?” the rich woman said in( with) surprise. in还是用with?
- 6请问祖父的园子这篇课文主要内容是啥?还有一些较难词语的理解?可以的话分一下段,
- 7已知Iab-2I+Ib=0-2I,求1/ab+1/(a+1)(b+1)+1/(a+2)(b+2)+……+1/(a+2006)(b+2006)
- 8I didn't speak English well enough to be calling American.
- 9What was I supposed to do I want to know.=I want to know__________.
- 10when she returns to Tokyo, she will write to you.(同义句转换)