选择题：Jack _____ in the street when I on him. (

题目内容：

Jack _________ in the street when I ____ on him. ( )(本题2.5分)
A、 … called
B、 was walking … was calling
C、 walked … was calling
D、 was walking … called

参考答案：

针对个别史实材料或观念材料所做的调查称作

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下列药品中首过消除效应最明显(本题2.0分)A. 吗啡B. 硝酸甘油C. 普萘洛尔D. 氢氯噻嗪E. 利多卡因

The railway ____ in three years. ( )(本题2.5分) A、 has completed B、 is complete

He asked who I voted for and I said it was my own ____. ( )(本题2.5分) A、 thing B

下列氨基苷类药物中,抗菌谱最广的是(本题2.0分)A. 奈替米星B. 西索米星C. 阿米卡星D. 妥布霉素E. 卡那霉素