A.dangerous
B.coherent
C.mysterious
D.numerous
关于激光的英文“laser”，正确的是A、light activation by stimulation emanation of radiationB、luminant amplimeter by stimulation emission of radiationC、light activation by strong emission of radiationD、luminant activation before strong emission of radiationE、light amplification by stimulation emission of radiation
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How long() you() a member of the club?A.have,,joinedB.have,,beenC.has,,joinedD.has,,been
He said that he ______ already _______ the English film.A. has; seenB. has; seeC. had; seen
He () some difficulty () the book into Japanese.A、is, to translateB、has, to translateC、is, in translatingD、has, in translating
Why is she ( )lunch so early? It's only 10 now.A. havingB. haveC. has
Whichfouraretrue?()A.Has-arelationshipsshouldneverbeencapsulated.B.Has-arelationshipsshouldbeimplementedusinginheritance.C.Has-arelationshipscanbeimplementedusinginstancevariables.D.Is-arelationshipscanbeimplementedusingtheextendskeyword.E.Is-arelationshipscanbeimplementedusingtheimplementskeyword.F.Anarrayoracollectioncanbeusedtoimplementaone-to-manyhas-arelationship.G.TherelationshipbetweenMovieandActressisanexampleofanis-arelationship.
When William hurried home, he found that his mother ____already ____to hospital.A、has; been sentB、had; sentC、has; sentD、had; been sent
