题目内容

铸造中用得最普遍的金属为()。

A. 铸钢
B. 灰El铸铁
C. 钴镍合金
D. 铅锡合金

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填()

A. recognized
B. realized
C. forgot
D. promised

到丁厂进行参观访问属于 ()

A. 模象直观
B. 形象直观
C. 感知直观
D. 实物直观

听下面一段对话,回答第14至16题。 What are the speakers talking about?

A. Seeadventures.
B. Vacation plans.
C. Life at the Caribbean.

一Did you know Susan was back in China? 一Is she—__________?

A. andhow
B. to where
C. since when
D. why not

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