由C++目标文件连接而成的可执行文件的默认扩展名为( )。
A. cpp
B. obj
C. exe
D. lnk
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2、由C++源程序文件编译而成的目标文件的默认扩展名为( )。
A. cpp
B. exe
C. lnk
D. obj
In the past few months, he lived ________ begging.
A. in
B. on
C. from
D. by
Jane is in charge of ________ deliveries.
A. making
B. doing
C. giving
D. bringing
One should be neither too casual nor too serious ________ his dress.
A. at
B. about
C. to
D. for
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