题目内容

He was sharply criticised by some race groups, who said his comments could ______ racist stereotypes.

A. perpetuate
B. prolong
C. extol
D. lengthen

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分泌胃蛋白酶的细胞是

A. 主细胞
B. G细胞
C. 壁细胞
D. 黏液细胞

allege A. Mr Murdoch didn’t work at News Corp. when most of the phone hacking ______ occurred. B. Whether he took care of any of these ______ children, or whether they existed at all, was another question.

The food industry yesterday slammed the idea as "dangerous", totally "unrealistic" and likely to ______ British agriculture.

A. reduce
B. belittle
C. shrink
D. decimate

微波与天线部分 简述前馈抛物线反射面天线的组成、配置及工作原理。

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