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【简答题】
Some scientists doubted__________
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举一反三
【单选题】I won’t able to ________ you a room on the May 1st.
A.
have
B.
give
C.
leave
D.
guarantee
【简答题】Direction: Suppose you have made an appointment with Mr. Smith for a business talk this Friday afternoon. Now your manager has asked you to go to Beijing on business and you won’t be able to return un...
【简答题】用相近的英语表达替换第一句话中划线部分的内容,使得两句话语意保持一致: I am afraid I won’t be able to accomplish the project on time because something has unexpectedly happened . Something has __________ and I am afraid I won’t be able...
【单选题】一平面简谐波沿x轴正向传播，已知x=L(L＜λ)处质点的振动方程为y=Acosωt，波速为u，那么x=0处质点的振动方程为( )。
A.
y=Acosω(t-L/u)
B.
V=Acosω(t+L/u)
C.
V=Acos(ωt-L/u)
D.
y=Acos(ωt-L/u)
【简答题】指出下列图形中的错误并改正之。
【单选题】Saturday afternoon? I’m I won’t be able to.
A.
thinking
B.
think
C.
afraid
D.
was thinking
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