Question

【题目】— should teenagers spend at least 30 minutes taking exercise?

—Five times a week，according to some reports．

A．How much B．How soon

C．How long D．How often

Answer 1

【答案】D

【解析】

试题分析：句意：--青少年多长时间做一次不低于30分钟的锻炼？ --据一些报告说，一周五次。How much提问不可数的量；How soon多快；How long 多长时间；How often多久一次。故选。D。