Canvas sails，when not in use，may be damage

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问题单项选择题

Canvas sails，when not in use，may be damaged if（）.

A.left in the sunlight

B.stowed wet

C.folded frequently

D.washed with soap and water

答案

参考答案：B

多项选择题

关于表皮痣的概述，下列说法正确的是（）。

A.常为浅黄或棕褐色疣状丘疹。可呈线状、带状或斑片状等不同形态

B.皮损分布多种多样

C.常在出生时或幼儿期发病，少数可

D.皮损随年龄增大，生长缓慢，但一般于成年期停止生长

E.组织病理显示痣细胞排列成巢状

选择题

We went through a period _____ communications were very difficult in the rural areas.

A．which

B．whose

C．in which

D．with which