如何正确使用听棒?
参考答案:
使用听棒时首先应注意安全,不要让听棒与运转部件接触,不要敲打设备,听棒与设备的接触点应选在接触良好且不易滑动的表面上。
—Do you think the exam will be put off? --()
A.Not good news
B.The exam is difficult
C.Not likely
D.It was put off yesterday