问题
选择题
He collected information on 1,000 people, whose IQ ________ when they were ten years old.[ ]
A. is tested
B. has tested
C. would test
D. had been tested
答案
答案：D
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He collected information on 1,000 people, whose IQ ________ when they were ten years old.[ ]
A. is tested
B. has tested
C. would test
D. had been tested
答案：D