把一张长方形纸平均分成6份，每份是这张长方形纸的______，4份是这张长方形纸

有柔软的身体、有贝壳、大多用鳃呼吸的水生生物是（　　）

A．藻类植物

B．软体动物

C．节肢动物

D．两栖动物

They told me the place ______ the car accident ______.

A．that, take place

B．that, happen

C．where, take place

D．where, happened

大量摄取维生素A.，发生急性中毒时，会出现（）。

A.出现异常激动成骚动

B.头晕，嗜睡，复视

C.严重头痛，呕吐

D.腹泻，脱皮（特别是唇和掌）

To have a balance between study and a social life I’m going to join a few clubs. ______I’ll make some new friends.

A．Hopefully

B．Obviously

C．Fortunately

D．Especially

需求曲线