初级

单选题Questions :
· You will hear a conversation about quality control.
· For each question (), mark one letter (A, B or C) for the correct answer.
· After you have listened once, replay the recording.
How many are there quality control inspection points.

参考答案:B进入在线模考
B
题干意为:有多少质量监控检查点。原文信息:There are four main quality control inspection points。故选B。