大象是植食性动物,有一种蜣螂则专以象粪为食。设一大象在某段时间所同化的能量为107kJ,则这部分能量中可流入蜣螂体内的约为( )
What are you doing,Tim?
I am listening to the song Long Live _______ makes me feel excited.( )
A.whichB.whoC./
Jane's spoken English is pretty good.
Yeah,she works hard and practices _______ it both in and out of class.( )
A.spokeB.to speakC.speaking
Finally,they came back.
They ______be hungry after such a long walk.( )
A.can'tB.mustC.needn't
Did you win the game yesterday?
Not really.______we all tried our best,we lost it.( )
A.IfB.ThoughC.Unless
Your coat fits you well.
Thank you.I_______ it when I was on vacation.( )
A.have boughtB.buy
C.bought