-Who is the man by a group of students there?-A professor research on physics.A．followed; didB．following; did C．followed; doingD．following; doing 题目和参考答案——青夏教育精英家教网—

题目内容

—Who is the man ______ by a group of students there?
—A professor _____ research on physics.

A．followed; did	B．following; did
C．followed; doing	D．following; doing

试题分析：句意为：----后面跟着一群学生的那位男士是谁？ ----做物理研究的一位教授。the man 与follow之间的关系为被动作后置定语，应为followed, a professor与do 之间的关系为主动，教授做研究。故应为C

练习册系列答案

Since the baby milk powder was found to be polluted, there has been universal doubt _____ other food products are safe _____.

A．that; to eat	B．whether; to be eaten
C．whether; to eat	D．that; to be eaten

——How wise of you to come round，but why？
——______ that all is right.

If ____unsolved, the problem of food safety may lead to more serious results.

_____ on a clear day, far from the city crowds, the mountains gave him a sense of peace.

A．If walking

B．While walking

C．Walking

D．When he was walking

Though ______small talk, Roy managed to have lively conversation with strangers.

I remembered________ the door before I left the office but forgot to turn off the lights.

Please remain _______; the winner of the prize will be announced soon.

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