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题目内容
（华北水利水电大学混凝土结构设计原理）
A bill passed by Congress becomes ______ as soon as the President signs it. ( )(本题2.0分)
A、 affected
B、 infected
C、 defective
D、 effective
A、 affected
B、 infected
C、 defective
D、 effective
参考答案