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【单选题】
What are differences between Scrum and Waterfall?A.
Scrum review the program when the work is finished.
B.
Waterfall cut the work to pieces.
C.
Waterfall won’t go to next step until the step focused on has been done.
D.
There’s no iterative or overlapping steps in the Waterfall model.
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反馈参考答案：
举一反三
【简答题】We couldn't help when we heard the news that we were going to have a three-day holiday.
【单选题】吊钩角由两根绳构成,两根绳上分别产生拉力。两根分绳的角度取决于负载的重量,重量增加角度加大,无论任何提升过程,吊钩角度不得超过:
A.
50°
B.
60°
C.
70°
D.
.80°
【单选题】We couldn't read the notice on the board because several people were standing______it.
A.
in front of
B.
in the front of
C.
at the back of
D.
in back of
【单选题】your help, we couldn't complete the work in time, I am afraid.
A.
If not
B.
Without
C.
Have we not had
D.
If we had not been
【单选题】We couldn't find the foreign boy anywhere. He____.
A.
has gone
B.
is gone
C.
went
D.
gone
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