多数情况下，股指期货合约实际价格与股指期货理论价格总是一致的。（）

最便宜可交割债券的价格决定了国债期货合约的价格。（） 点击查看答案

听力原文：W: You look exhausted this morning, Steve.M: I am pretty tired. I stayed up nearly all night getting ready for a mid-term exam this morning.W: Have you gotten the results of the test yet?M: Yes, and unfortunately, my grade could have been much better.How does the man feel about his grade?A．It was an improvement.B．It was disappointing.C．It was unfair.D．It was satisfying.

A.
M:
B.
W:
C.
How
D.It
E.
B．It
F.
C．It
G.
D．It
H.

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