多项选择题

下面关于螺杆均化段的描述正确的是（）。·

A.均化段塑料被塑化均匀·
B.均化段对塑料的温度均化·
C.均化段对塑料的挤出进行定量·
D.均化段是从压缩段末到机头前的一段

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根据《标准》要求，小学低年级的英语教学中可以设计的游戏不包括。
A、简单游戏
B、角色表演
C、简单交际
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单项选择题

If price elasticity of demand is 2.0, this implies that consumers would ( )

A．buy twice as much of the good if price falls by 10 percent.
B．require a 2 percent cut in price to raise quantity demanded of the good by 1 percent.
C．buy 2 percent more of the good in response to a 1 percent cut in price.
D．require at least a $2 increase in price before showing any response to the price increase.