题目内容

学术论文的摘要越长越好，一般要超过300字。

A. 对
B. 错

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一篇完整的学术论文的格式，通常有（）组成

A. 标题
B. 内容摘要
C. 关键词
D. 附注
E. 正文

In compensation trade,although the seller has to accept deferred payment ______ the form of products,he can still gain profit from the sale of his equipment and the products.

A. by
B. with
C. on
D. in

In compensation trade,the buyer will pay resultant products all or part of theequipment and technology purchased __ abroad.

A. in, for , from
B. from, for, in
C. by, of, in
D. through, in, from

He is studying the technology for making carsnow but he ______ a shop assistant.

A.would be
B. had been
C. formerly were
D. used to be