What ________ the safe working load of the derrick?
A.is
B.be
C.are
D.has
Terri: Derrick, don't you think you should take a vacation? Even one or two days would be fine.Derrick:__________ There's too much work.A． I think so.B． No way.C． Count on me.D． You don't know.
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They went on ________ as usualA.workB.workedC.worksD.working
I____ not____at the moment.A.am workingB.is workingC.are workingD.working
I' m looking forward to()together with you.A. workedB. workC. working
publicclassTestSevenextendsThread{privatestaticintx;publicsynchronizedvoiddoThings(){intcurrent=x;current＋＋;x=current;}publicvoidrun(){doThings();}}Whichistrue?()A.Compilationfails.B.Anexceptionisthrownatruntime.C.Synchronizingtherun（）methodwouldmaketheclassthread-safe.D.Thedatainvariable“x”areprotectedfromconcurrentaccessproblems.E.DeclaringthedoThings（）methodasstaticwouldmaketheclassthread-safe.F.WrappingthestatementswithindoThings（）inasynchronized（newObject（））{}blockwouldmaketheclassthread-safe.
The Chinese _____ hard－working.A. beB. beingC. isD. are
The commercial telephone service was no longer operative.A:creative B:moving C:rotating D:working
