It may be necessary to stop ______in the learning process and go back to the difficult points in the lessons.

A．)at a distance                B)at intervals

C．)at case                    D)at length

It may be very necessary to teach the kids to__________ the differences among th

Change the form when necessary. You may not use any of the words more than once.

[名词解释] 停止指令STOP

[名词解释] “天窗” stop short

[单选题]In securities exchange markets, a member who executes stop loss or stop buy

[单选题]Sheoughttostopwork；shehasaheadachebecauseshe______toolong.A)hasbeenreadingB)hadreadC)isreadingD)read

[单选题]Stop behaving like a baby ! _____ yourself together.A．Put B.Push C.Pull D.Bind

[单选题]__________[A] fight [B] doubt [C] stop [D] think

[单选题]Do you know ______at the bus stop?A.whom they are waiting forB.who they are

[单选题]If you are unable to stop a diesel engine by any other means，you should（）.A . discharge a CO2 extinguisher in the air inletB . pull off the distributor capC . secure the jacket waterD . secure the starting air supply valve