周作人（1885-1967），浙江绍兴人，初名櫆寿，号星杓。其散文历来就有（）两种风格。
参考答案：浮躁凌厉和冲淡
—Where was the boy taken away by the UFO?
—Oh, it was in the lake ______ he was swimming.[ ]
A. that
B. where
C. because
D. at which
下列各项中，肯定属于男性精子染色体组成的是（ ）
A．22条+X
B．22条+Y
C．22条+XY
D．22对+Y
