Tim likes China. He wants ______ the Gre

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问题选择题

Tim likes China. He wants ______ the Great Wall. [ ]

A. visit

B. visiting

C. visits

D. to visit

答案

答案：D

选择题

Welcome to the Science Museum, everyone! This stone axe _______ in South Africa and

experts can’t be exactly sure about its use.

A．had been found

B．was found

C．has been found

D．would be found

多项选择题

下列哪些处理对于主动脉瓣关闭不全来说是有益的（）

A.适当降低体循环阻力

B.保持稍快的窦性心律

C.适当增加前负荷

D.降低心肌收缩性

E.麻醉维持尽量少用氟烷