9． Scientists _________know a lot．

A． are supposed to

B． suppose to

C． are supposing to

D． supposed

[主观题]a lot. The Sichuan Restaurant and the older fish shop78 .__________

[单选题]9．—Where-s Mr Wu ,do you know?—Well ,lt's hard to say． But I saw him ________a football game just now．A． was watchingB． watchingC． had watchedD． watched

[单选题]43． _________ scientists have done a lot of research on A (HINl) flu，there are still some cases for further study．A．AsB．OnceC．IfD．Although

[单选题]This box is too heavy. ______________.Thanks a lot.A.Could you help me, pl

[单选题]D．o scientists know how many cryptic species exist?A．Not yet.B．Yes, they do.C．They will know the answer in another one or two years.D．They will never know the answer.

[单选题]I' m still unable to make myself _____in the discussion, which worriesme a

[单选题]I am still unable to make myself_____in the discussion, which worries me a

[单选题]9．A．amB．isC．areD．be

[单选题]9．A．WritersB．ChildrenC．CompaniesD．Friends

[单选题]9．A．drinkB．eatC．cookD．buy