1982年，计划生育被党的十二大确定为基本国策，同年写入《中华人民共和国宪法》。
参考答案：对
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
抽油机光杆烫手，而且发黑是什么原因？如何处理？
