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问题 选择题

There are many insects in the world that never do _______ harm to human beings.

A．less

B．the least

C．a little

D．the little

答案

答案：B

词义辨析。A. 较小  B.最少   C. 一点    D.小人物们。句意：世界上有许多昆虫从来没有对人类做一点伤害。选B。

单项选择题

贷款损失准备金充足率一般不低于()

A.100%

B.50%

C.80%

D.90%
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单项选择题

In (66) the strength of the carrier signal is varied to represent binary 1 or 0. (67) is a system that can map a name to an address and conversely an address to al name. (68) is a three-way handshaking authentication protocol that it’s packets are encapsulated in the point-to-point protocol. (69) is an approach that enables an ATM switch to behave like a LAN switch. (70) is an guided media which is made of glass or plastic and transmits signals in the form of light.

A．ASK

B．PSK

C．FSK

D．FDM
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