相关考题
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单项选择题
The scientists are（）a series of experiments to learn more about how the body adapts to weightlessness.
A.defining
B.having
C.carrying
D.doing -
单项选择题
The red flower goes from one to（）in the class.
A.the other
B.others
C.another
D.other -
单项选择题
The rain was（）make our picnic impossible.
A.hard enough
B.hard so to
C.so hard as to
D.so hard to
