2. 外语
  3. When the athlete experienced ______ heartbeats and pain in his left arm, the trainer sent him to the emergency room.

When the athlete experienced ______ heartbeats and pain in his left arm, the trainer sent him to the emergency room.

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问题 When the athlete experienced ______ heartbeats and pain in his left arm, the trainer sent him to the emergency room.
选项 A、irregular
B、derivative
C、primary
D、multiple
答案A
解析 此题是形容词辨析。irregular，不规则的；derivative，引出的；primary，主要的；multiple，复合的．复式的，多重；复杂的；多样的。
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大学英语四级

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