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第1题

Mrs. Brown is supposed ______ for Italy last week. A. to have left B. to leave C. to be leaving D. to have been left
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第2题

Scientists have tried many ways to prevent the nuclear reactions from ______ harmful and dangerous radiation. A. giving
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第3题

Since the reform, the country’s economy has been fairly _______. A. healthful B. healthy C. well D. health
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第4题

14、 设双点弦法收敛,则它具有( )敛速。 A. 线性 B. 超线性 C. 平方 D. 三次
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