题目内容

We finished all of the food at a sitting. The underlined part means ______.

A. at one time
B. in time
C. on time
D. at a time

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The decision of the Supreme Court was that the government has used its power too ______ under the Act.

A. broadly
B. expensively
C. covertly
D. liberally

The prisoner was questioned for three hours but he remained ______ throughout his trial.

A. blind
B. deaf
C. dumb
D. inarticulate

Such a decision would ______ a huge political risk in the midst of the presidential campaign.

A. result
B. assure
C. entail
D. accomplish

光激励荧光体中,常掺入___________以改变荧光体的结构和物理特性

AP+
B. Eu2+
Cu2+
D. TI2+
E. Se2+

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