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一、高频考点
二、每日一练
1. If the appliance is defective, write directly to the manufacturer _____ complain to your local consumer protection association.
A. then B. or C. but D. though
2. Criticism and self-criticism are necessary _____ they may help us to find out and correct our mistakes.
A. by that B. at that C. on that D. in that
3. Helen is a good companion, I mean, _____ we sometimes don’t have everything in common.
A. even though B. as if C. in case D. so that
【答案】BDA
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