将一块3cm×3cm×6cm的含酚酞的琼脂块切成三块边长分别为1cm、2cm、3cm的正方体．将3块琼脂块放在装有NaOH的烧杯内，淹没浸泡10分钟．下列说法正确的是

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将一块3cm×3cm×6cm的含酚酞的琼脂块切成三块边长分别为1cm、2cm、3cm的正方体．将3块琼脂块放在装有NaOH的烧杯内，淹没浸泡10分钟．下列说法正确的是（　　）

A：随琼脂块增大，NaOH扩散速率增大

B：随琼脂块增大，琼脂块的表面积与体积之比增大

C：随琼脂块的增大，琼脂块中变红的体积增大

D：随琼脂块增大，琼脂块中变红的体积所占的比例增大

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C

Picture	Description(描述)
____.	A. They're very smart. People kill them for their ivory.
____	B. Do you often watch him play basketball? If you do so, what do you think of him?
____	C. —I can't find my keys. —Let me help you.
____	D. It's good exercise and also it's good for our environment (环境).
____	E. I always get up at 6 o'clock in the morning.
	F．It means that you can't take photos.