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【单选题】
AT89C51单片机的TMOD模式控制寄存器是一个专用寄存器,用于控制T1和T0的操作模式及工作方式,其中C/T表示的是( )。A.
B.
操作模式控制位
C.
功能选择位
D.
启动位
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举一反三
【单选题】Last winter, it snowed ______ but not enough for skiing.
A.
constantly
B.
accidentally
C.
occasionally
D.
frequently
【简答题】Since the ground is white, it _______________ last night. (had snowed, must have snowed)A. must have snowed
【单选题】It snowed last winter.
A.
No. It's a topic.
B.
No.It's an announcement.
C.
No.It's too broad.
D.
No. It's too narrow.
E.
No. It has more than one idea.
F.
Yes. It's a good thesis statement.
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