A.The similarities between mammals and humans.
B.The necessity of long-term studies on mammals.
C.A change of public attitude to the treatment of mammals.
D.A new discovery of how mammals think and feel.
[单选题]If $1,000 is invested today and $1,000 is invested at the beginning of each
[单选题]__________ difficulties we may come across, we′ llhelp one another to overc
[单选题]When the machinery spaces are in the periodic unmanned condition, ____ shall be immediately available and on call to attend the machinery spaceA.the chief engineerB.the designated engineer from shipyardC.the designated duty officer in charge of the e
[单选题]Guests were [scared]when the bomb exploded.A.killedB.endangeredC.rescuedD.f
[单选题]On December 31, 2009, Modern Company issued 1,000 $1,000 face-value eight p
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[单选题]Lots of rescue workers were working around the clock , supplies to Yushu,Oinghai province after the earthpuake.A.thatB.whereC.whichD.whose
[单选题]Lots of rescue workers were working around the clock, supplies to yushu.Oinghai province after the earthpuake....A.sendingB.to sendC.having sentD.to have sent
[单选题]The machinery had been wrecked so efficiently that police were sure it was
[单选题]The machinery had been wrecked so efficiently that police were sure it was