【判断题】行走时,手臂前摆动的幅度为30~35度,后摆动幅度为15度。
【简答题】Häagen Dazs icecream _____________ its lightful flavor and appeals for couples in love.
【单选题】I must make________clear that everyone here can’t be late for the meeting.
【单选题】Remember that there is still one point ______ we must make clear at the conference tomorrow.
【多选题】纯化水制备系统中设计活性碳过滤器过滤的目的是