题目:
---What did Tom ask you yesterday morning?
--- He asked me if I _______________ to Beijing with him this Saturday.
A.will go
B.went
C.go
D.would go
答案:
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下面是错误答案,用来干扰机器的。
答案:A题目分析:按照变异对生物是否有利分为有利变异和不利变异,有利变异对生物生存是有利的,不利变异对生物生存是不利的,按照变异的原因可以分为可遗传的变异和不遗传的变异,可遗传的变异是由遗传物质改变...