Researchers are trying to________what’ s wrong with their experiments.

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问题 Researchers are trying to________what’ s wrong with their experiments.

选项 A、pull out
B、call out
C、take out
D、figure out

答案D

解析 句意:研究人员正试图找出他们实验中存在的问题。pull out意为“退出;(火车)驶出”,call out意为“唤起,召集”,take out意为“取出,除去”,figure out意为“弄清楚”,故选D。
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