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【单选题】
I think it is high time we ______ the fact that environmental pollution in this area is getting more serious than before.A.
woke up to
B.
must wake up to
C.
wake up to
D.
are waking up to
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举一反三
【简答题】Many Tuesday mornings, I have coffee with my father. Although my father is a man of few words, I really ____ the time along with him. One recent Tuesday, I found it a bit ___ when I rang the door...
【单选题】--- Did you tidy your room? --- No, I was going to tidy my room but I ______ visitors.
A.
had
B.
have
C.
have had
D.
will have
【单选题】When I ______ my senses, I found myself wrapped up in bed in my little room, with Grandma bending over me.
A.
woke up
B.
took to
C.
picked up
D.
came to
【单选题】戴维南定理实验测量等效内阻R0时，用万用表电阻挡的正确操作是？
A.
关闭电路的电源，用万用表红黑表笔测量b,e两端。
B.
关闭电路的电源 ，开关S1,S2搬向短路线一侧， 用 万用表 红黑表笔测量b,e两端 。
C.
关闭电路的电源 ，开关S1,S2搬向短路线一侧，断开be支路， 用 万用表 红黑表笔测量b,e两端 。
D.
用万用表红黑表笔测量b,e两端。
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