The two leaders have _____ the foundatio_爱下问搜题

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问题选择题

The two leaders have _____ the foundations of a new era in cooperation between their countires.

A．laid

B．lied

C．lain

D．set

答案

答案：A

问答题简答题

“南来尚怯吴江冷，北狩应悲易水寒。”出自哪位词人之手？

单项选择题

单斜晶系的晶体常数是：（）。

A.a≠b≠c，α=β=ｒ=90°

B.a≠b≠c，α=ｒ=90°，β≠90°

C.a≠b≠c，α=β=90°，ｒ＝90°