舌背上数目最多与舌苔形成有关的结构是（） A．丝状 * * B．叶状 * * C．菌状 * *

You can’t see any object unless light from that object gets into your eyes．Some of the things you see give off light of their own。The sun，the stars，a lighted lamp are the examples that can be seen by their own light．But most of the things you see are not giving off light of their own．They are just reflecting(反射)light that falls on them from the sun or some other luminous bodies．The moon，for example，doesn’t give off any light of its own．It is not 1uminous．You see it because sunlight falls on it and some of the sunlight reflects on the earth．So moonlight is only second—hand sunlight．

When you look at a book，it sends some of the light which fails on it to your eyes，and you see the book．If light could be kept out from where you’re so that there would be no light from the book to reflect．Then you couldn’t see the book even with your eyes wide open．Light travels so fast that the time in which it travels from the book you’re reading to your eyes is as short as if there were no time at time．Light reaches us from the moon，which is about 380，000 kilometres away，in only a little more than a second．

小题1:You can see the book because________．

A．your eyes are close to it

B．it reflects some of the light

C．it has light of its own

D．it is big enough to be seen小题2:The Chinese meaning of the world“luminous”is close to_______．

A．闪光的

B．看不见的

C．发光的

D．明亮的小题3:________has light of its own．

A．The moon

B．The earth

C．The sun

D．The satellite of Dong Fong Hong小题4:Light travels about_________kilometers per second．

A．300，000

B．100，000

C．400，000

D．190，000小题5:Which of the following is TRUE?

A．All the things you can see give off light．

B．Light from the book is much faster than that from the moon．

C．The moment you open your eyes，the light from the book travels to your eyes．

D．Light travels so fast that there is no time for you to read．

交通运输布局的变化会对商业网点分布产生显著的影响。近年来，以沃尔玛、美特好、国美、苏宁等为代表的大型超市进驻我省某些城市，形成新的商业网点格局。读图，回答1~2题。

1、上图中沃尔玛、美特好两大超市布局的最大优势是[ ]

A、商业的信息灵通

B、周围的住家多

C、交通的通达性好

D、外地的游客多

2、这种区位选择的主要目的是[ ]

A、最大范围吸引消费群体

B、为顾客提供最丰富的商品

C、有利于提高商品价格

D、为该城市增添旅游观光景点

肺癌术后病人练习深呼吸（）

A.避免血栓形成

B.减少出血

C.促进肺扩张

D.减轻疼痛

E.促进痰液排出

在下列选项中，属于心理过程的是( )

A．意志

B．能力

C．气质

D．兴趣

音乐电视这种舶来的艺术形式，已在中国民族化的过程中，______出了一条成功的路子。 填入划横线部分最恰当的一项是( )。

A．探索

B．摸索

C．创造

D．发展