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课时提升作业(十七)
必修4 Unit 2
Ⅰ. 单项填空
1. (2013·金华模拟)Are you free tonight? , I’d like you to meet Tom, my new friend from the United States.
A. Even so B. When necessary
C. If not D. If so
2. (2013·温州模拟)With this equipment, you can underwater beauty and a new world of adventure!
A. experiment B. explore
