第二部分：词汇知识运用(共两节，满分30分)
第一节 多项选择 (共10小题，每小题1分，满分10分)
21. The doctors and nurses arrived at the _______ soon after the accident happened, so no people died from it.
A. grave B. buffet C. scene D. passage
22. To avoid his shop being stolen again, he thought it over and at last decided to set a security________ in it.
A. system B. measure C .account D. baggage
23. What _______ the foreign experts most is that the new factory is perfectly environment-friendly.
A. terrifies B. reminds C. forgives D. impresses
