当太阳光线直射赤道时，下列各地哪个太阳高度角最低（ ）
A．10°N
B．80°S
C．20°S
D．50°N
答案：B
In the good care of the nurses , the boy is recovreing from his heart operation .
A．quietly
B．actually
C． practically
D．gradually
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