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- 1The best way to learn English well is by watching English language movies.
- 2计算化合价,书写化学式时,有的元素可能有好几种化合价,用哪一种?
- 3求证:sin 2a/1+sin a+cos a=sin a+cos a-1
- 4英语:过去式的表格
- 5What are you going next holiday?怎么回答
- 6(1)已知tanα=-(3/4),求sinα,cosα,cotα的值; (2)已知cosα=0.68,求sinα,tanα,cotα的值(计算结
- 7请问这句话如何改成定语从句的形式.
- 8为什么劳动力是人类诞生的标志
- 9甲公司销售商品一批,商品的销售价款为2 000元,商业折扣10%,增值税税率为17%,现金折扣条件为2/10,
- 10He remained buried in thought for some time.这句中remain后面为什么接done而不接doing?