单项选择题

The production of these cancerous cells （）the production of normal white blood cells.

A. depresses
B. suppresses
C. lessens
D. degrades

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单项选择题
I’ve never been able to work her out. The underlined part means （）

A. to work together with her
B. to understand her
C. to ask her out
D. to persuade her
单项选择题
I think he’s the most charming, most ______ man I’ve ever known.

A. conservative
B. considerable
C. considering
D. considerate
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