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【单选题】
数值数据在计算机中的二进制表示方法有很多种，目前广泛使用的X86系列PC机windows系统中数值表示的方法是（）。A.
原码
B.
补码
C.
反码
D.
ASCII码
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【单选题】It's nice ______ you ______me with my maths.
A.
for, to help
B.
for, helping
C.
of, to help
D.
of, helping
【单选题】It's nice __ you __ me with my maths.
A.
for; helping
B.
of; helping
C.
for; to help
D.
of; to help
【单选题】It's nice _______ Andy _______ me with my English study. [ ]
A.
at; to help
B.
of; to help
C.
with; help
D.
of; help
【单选题】-- Will you please help me with my English? --( ).
A.
Excuse me, I'm afraid not
B.
It's very nice of you
C.
I'm sorry to hear that
D.
Certainly, I'll be glad to
【单选题】It's nice me with my lessons.
A.
of you to help
B.
for you to help
C.
of you helping
D.
for you helping
【单选题】—It's nice ______ you ______ me with my maths. —It's my pleasure. [ ]
A.
for, to help
B.
for, helping
C.
of, to help
D.
of, helping
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