题目内容

使用最合适的时态填空。Don't phone me between 7 and 8 this evening. We ___________________ (have) dinner then.

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使用最合适的时态填空。Phone me after 8 o'clock this evening. We _______________ (finish) dinner by then.

使用最合适的时态填空。I _____________ (phone) you when I get home from work tomorrow.

机会致病菌(条件致病菌):

细菌致病能力的强弱程度,称为()。

A. 毒素
B. 侵袭性酶
C. 毒力
D. 侵袭力

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