单项选择题

A. Because female wasps transmit diseases.
B. Because male wasps do not leave the nest.
C. Because female wasps are bigger than males.
D. Because female wasps have stingers.
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单项选择题
A. The man should buy a new car.B. The car looks better than it used to.C. The man should fly to Florida.D. The man should get his car checked.
A. The man should buy a new car.
B. The car looks better than it used to.
C. The man should fly to Florida.
D. The man should get his car checked.
单项选择题
A. Make up homework problem sets. B. Do research in laboratory. C. Teach an economics course. D. Grade homework sets.
A. Make up homework problem sets.
B. Do research in laboratory.
C. Teach an economics course.
D. Grade homework sets.
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