题目信息
The biathlon is one of the world's most demanding sports, it combines the endurance of cross country skiing with the precision of expert marksmanship.
A:sports, it combines
B:sports; that combines
C:sports; it combines
D:sports, where they combine
E:sports in which they combine
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本题耗时：
已选答案：
正确答案：
C:sports; it combines
中间逗号前后出现了两个主语：The biathlon 和 it，一句话不能两个主语，选项里也没有带连词的，所以用分号隔开两句话
A) has the comma splice issue - no conjunction to join to 2 sentences just a comma,which alone is inadequate to combine 2 sentences.
B) the semi colon is used to join 2 complete sentences or independent clauses. Here the second part of the sentence {;that... } is not a independent clause
C) is grammatically and logically correct
D and E use pronoun they without and clear antecedent, causing ambiguity. Pronoun error. Also the use of 'where' is incorrect. It is used to refer to a physical/metaphorical place
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题目来源
Manhattan
