现金包括铸币、纸币和信用货币。()
A. 正确
B. 错误
The SQ3R method consists of______steps.
A. three
B. four
C. five
D. seven
A．sighB．commitC．doD．make
A. sigh
B. commit
C. do
D. make
Which of the following may be the best title for the passage？
A. Global Satellite Communications.
B. New Voice and Messaging Systems.
C. New Generation Satellite.
D. Always in Touch.
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