单项选择题

Due to the tilt of Neptune’s axis, the Sun heats the planet’s northern and southern hemispheres unequally.

A．climates
B．halves
C．atmospheres
D．contours
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单项选择题
At first glance, a forest appears to be a haphazard collection of trees, shrubs, vines, and flowers.
A．random
B．total
C．graded
D．natural
单项选择题
Modern nursing practices not only hasten the recovery of the sick but also promote better health through preventive medicine.
A．permit
B．determine
C．accelerate
D．accompany
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