He demanded that all the work ________ in advance.
A．finished
B．should be finished
C．should finish
D．would finish
答案：B
考查虚拟语气。Damand后面的从句使用虚拟语气should+do; should可以省略。句意：他要求所有工作都要提前被完成。根据句意可知使用被动语态。故B正确。
Passage 2
What is this talk mainly about a. The importance of preventive actions against medical risks b. Americans’ misunderstanding of preventive actions against medical risks. c. The reasons why some Americans fail to react against some medical risks. d. An investigation about Americans’ attitudes toward medical risks and some suggestions.