Teenagers should never give any strangers ______.

A． their mobile phone numbers

B． their family address

C． their personal information

D． their parents’ names

[单选题]The crankcase cover should never be allowed to open for investigation when （）A . the engine stopsB . the engine is runningC . you repair the engineD . overhauling the engine

[单选题]：Keys should never be hidden around the house since thieves（ ）know where to find them．A．virtuallyB．unavoidablyC．reliablyD．invariably

[单选题]( )you start，you will never give up.A.Even ifB.If onlyC.WhileD.Once

[单选题]( )you start，you will never give up.A.Even ifB.If onlyC.WhileD.Once

[单选题]( )you start，you will never give up.A.Even ifB.If onlyC.WhileD.Once

[单选题]( )you start，you will never give up.A.Even ifB.If onlyC.WhileD.Once

[单选题]____ should not undertake any task which will interfere with the supervision duties relating to the main machinery and associated equipment.A．The watch keeping personnelB．The chief engineerC．The person on a bunker bargeD．The duty deck officer

No part of this publication should be reproduced, or transmitted, in any form or

[单选题]We should ______ our agents of any price increases.(A) notify(B) tell(C) notice(D) warn

[单选题]（） should not undertake any task which will interfere with the supervision duties relating to the main machinery and associated equipment.A . The watch keeping personnelB . The chief engineerC . The person on a bunker bargeD . Any of the above