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【单选题】
（ ）具有存储容量大、安全性高、应用范围广、对网络要求低，可靠性高、可并行处理、操作简单等优点。A.
非接触式IC卡
B.
接触式IC卡
C.
纸质车票
D.
磁卡车票
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举一反三
【单选题】______ work has been done to improve people' s living standard.
A.
Many
B.
A great many
C.
A large number of
D.
A great deal of
【单选题】Every means _____tried. All the means _______ tried. A.has been/have been B.has been/has been C.have been/have been
A.
has been/have been
B.
has been/has been
C.
have been/have been
D.
have been/has been
【单选题】Mr Li ____ England. He ____ London for two weeks.
A.
has been to; has been to
B.
has gone to; has been in
C.
has been to; has been in
D.
has gone to; has been to
【单选题】Your computer has the following hardware configuration: 512 MB of RAM 10-GB hard disk 933-MHz processor 64-MB video adapter. You want to install Microsoft Windows Vista on this computer. You need to i...
A.
A
B.
B
C.
C
D.
D
【单选题】The sick cured and the lost found.
A.
have;have
B.
has;has
C.
have been;have been
D.
has been;has been
【单选题】以下关于旋光性的说法不正确的是( )。
A.
含有手性碳原子的物质都具有旋光性。
B.
物质的旋光性分为左旋和右旋。
C.
物质的旋光能力用旋光度表示。
D.
旋光度为0的溶液不含具有旋光性的物质。
【单选题】_________money has been invested to promote the traffic conditions of this city.
A.
A plenty of
B.
A large amount of
C.
A great number of
D.
A large sum
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