课时跟踪检测 选修六 Unit 3 A healthy life
(计时：45分钟)
Ⅰ.词汇知识
1．— Did you find out the time of the train to Miami?
— Yes, the early train is ________ to leave at 5：30 am.
A. due B. likely
C. possible D. about
答案与解析 A be due to do“按计划预定要做某事”。火车的时刻表是事先制订好的，不能说“可能”在什么时候出发，所以不选B项。possible一般以it作形式主语， be about to do不能与具体的时间状语连用，故C、D两项不对。
2．The conference has been held to discuss the ________ of global warming on people's lives all over the world.
A. importance B. effects
C. protection D. attitudes
答案与解析 B 句意：已经召开了会议讨论全球气候变暖对全世界人们生
