2. 外语
  3. Scientists have discovered a close______between smoking and several serious diseases.

Scientists have discovered a close______between smoking and several serious diseases.

admin2013-11-24  61
问题 Scientists have discovered a close______between smoking and several serious diseases.
选项 A、action
B、connection
C、union
D、combination
答案B
解析 B项意为“联系”，符合上下文的意思。
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