在计算机存储器中,存储英文字母“A”,存储的是它的( )。
A. 输入码
B. ASCⅡ码
C. 输出码
D. 字形码
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70()
A. send
B. present
C. appoint
D. get
Mary has a curious expression on her face as though she ______ about something.
A. is smiling
B. were smiling
C. smiles
D. has smiled
在固定资产投资构成中,建筑安装工程费用约占( )。
A. 40%~50%
B. 50%~60%
C. 60%~70%
D. 70%~80%
63()
A. and
B. that
C. but
D. so