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【单选题】
The reason why corn can be processed into other food additives is that ______.A.
it can serve as sweeteners during cooking
B.
it contains an unparalleled amount of starch
C.
its basic organic molecules can be broken down
D.
its chemical composition can be changed and reorganized
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【单选题】You _____ cross the road when the traffic lights are red. It's dangerous. [ ]
A.
needn't
B.
may not
C.
mustn't
【单选题】You should be __________ when you cross the street.
A.
quiet
B.
easy
C.
careful
D.
hard
【单选题】You ______ cross the road when the traffic lights are red. It’s dangerous. A. n
A.
You ______ cross the road when the traffic lights are red. It’s dangerous. A. needn’t
B.
may not
C.
mustn’t
【单选题】You _____ be careful when you cross here --- the traffic lights aren’t working.
A.
could
B.
might
C.
ought to
D.
may
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