问题
选择题
Do you expect to be a possibility that we shall be able to afford the particular furniture we need？
A．it
B．there
C．that
D．one
答案
答案：B
考查代词。本题考查expect to do期盼做，和there be句型，故选B。
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Do you expect to be a possibility that we shall be able to afford the particular furniture we need？
A．it
B．there
C．that
D．one
答案：B
考查代词。本题考查expect to do期盼做，和there be句型，故选B。
的离心率为en，且e2=
，证明：
。