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【单选题】
Despite insecure returns the ranchers raise cattle becauseA.
they like investments
B.
they like challenges
C.
they like the job
D.
they like the rural area
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【单选题】THE MAGIC OF EXERCISE Suppose there was a potion that could keep you strong and trim as you aged, while protecting your heart and bones improving your mood, sleep and memory warding off breast and col...
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C.
people who walk 40 miles a week
D.
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【单选题】THE MAGIC OF EXERCISE Suppose there was a potion that could keep you strong and trim as you aged, while protecting your heart and bones improving your mood, sleep and memory warding off breast and col...
A.
people who suffer high mortality
B.
people who take little exercise
C.
people who walk 40 miles a week
D.
people who have a lower rate of heart disease
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A.
people who suffer high mortality
B.
people who take little exercise
C.
people who walk 40 miles a week
D.
people who have a lower rate of heart disease
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A.
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B.
UNIX本身由汇编语言编写，易读、易移植、运行速度快
C.
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D.
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