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【单选题】
若进行U检验，公式为A.
B.
P1—π
C.
/?p1
D.
E.
P1—P2
F.
/?P
G.
H.
P1—P2 /SP P1—P2 /SP1 P1—π /SP
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举一反三
【单选题】She thought of her warm days with Tom and couldn't help crying.
A.
Thinking of her warm days with Tom, she couldn’t help crying.
B.
Thought of her warm days with Tom, she couldn’t help crying.
C.
To think of her warm days with Tom, she couldn’t help crying.
D.
Think of her warm days with Tom, she couldn’t help crying.
【简答题】怎样理解大力推进生态文明建设的重要意义?
【简答题】Granny looked for her book，but she couldn’t find it_____.
【单选题】hard she tried, she couldn't control her feelings when she was told her baby had been found．
A.
As
B.
While
C.
However
D.
Although
【单选题】—Why isn’t Susan at the dance? —She couldn’t come because she hurt her foot. — !
A.
Don’t worry about her y
B.
Never mind
C.
That’s a shame
D.
Bad luck
【简答题】9月10日教师节即将到来,请制作一张感恩教师的公众号封面图。
【简答题】细菌产生的色素可分______和______两类,绿脓杆菌产生的色素属于______。
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