A young woman was at the cinema，and she was enjoying the film very much．In the next seat there was an old man，and he began looking on the floor under him．The woman was angry and whispered(低声说话)，“What are you doing now? What are you looking for?”

“A piece of chocolate(巧克力)，”the man whispered to her,“I've dropped it on the floor．”

“A piece of chocolate? ”the woman said angrily,“It s dirty now! Take this and be quiet, please! I'm listening to the film!”She gave the man a big piece of chocolate．

“But．”the man said,“my teeth are in the piece on the floor!”

1.This story took place at the cinema _______．

A．when the film was on

B．when the film was over

C．when the old man was looking for the chocolate

D．when the woman was whispering to the man

2.The woman gave the man a big piece of chocolate _________．

A．so that he could listen to the film

B．so that he could be quiet

C．because his chocolate was dirty

D．because she had too much chocolate

3.At last the woman knew that the man was looking for _________．

A．the piece of chocolate                   B．his seat

C．the big piece of chocolate                 D．his teeth

4.On the floor lay _________．

A．neither chocolate nor his teeth

B．either chocolate or his teeth

C．both his chocolate and his teeth

D．chocolate only

Air is a colorless, tasteless and invisible（看不见的）gas that is around us. An “empty” drinking glass and an “empty” room, in fact, are not really empty. Each is filled with air. When the glass is filled with water, the water pushes the air out of the glass.
Air, as a gas, has no definite shape, but because it is matter, it takes up space and it has weight. It is easy to prove that air is something that takes up space. Stuff a piece of dry cloth（布）into the bottom of a glass so that it will not fall out when the glass is turned upside down. Push the upside down glass, holding straight up and down, into a jar of water till the glass is completely covered. When the glass is taken out of the water, the cloth is still dry. The air inside the glass shows that it takes up space and keeps the water from coming in.
【小题1】Since air is matter, it has ________.

Air is a colorless, tasteless and invisible（看不见的）gas that is around us. An “empty” drinking glass and an “empty” room, in fact, are not really empty. Each is filled with air. When the glass is filled with water, the water pushes the air out of the glass.

Air, as a gas, has no definite shape, but because it is matter, it takes up space and it has weight. It is easy to prove that air is something that takes up space. Stuff a piece of dry cloth（布）into the bottom of a glass so that it will not fall out when the glass is turned upside down. Push the upside down glass, holding straight up and down, into a jar of water till the glass is completely covered. When the glass is taken out of the water, the cloth is still dry. The air inside the glass shows that it takes up space and keeps the water from coming in.

1.Since air is matter, it has ________.

A．room , and weight as well                 B．both room and shape

C．either room or weight                    D．neither shape nor weight

2.The word “Stuff” means ______ in Chinese.

A．撕               B．盖               C．取掉             D．塞

3.The writer tells that the experiment（实验）___________.

A．is carried out in the space                 B．must be done in the lab

C．is made in the room                     D．can only be done in the open air

　　A well-trained teacher is not nervous, because she has the confident which comes of knowing that she is fully prepared for her work. She can help all her pupils, from the brightest to the slowest; and when she realizes, from the silence of her class when she asks a question, that they have not understood what she has explained, she is able to repeat her explanation again in different ways. Above all, she must never cause her pupils to lose confidence(信心). She must always speak to them kindly and when one of them turns red with shame at having answered a question after a long delay instead of easily, she must quickly make him or her feel at ease again. I was once sad to see a teacher being unkind to a girl who put up her hand and then answered a question with mistakes.

　　(46) A well-train teacher is never nervous because ___________.

　　A. she knows she has not got everything ready

　　B. she has enough confidence to do it ready

　　C. she never knows it is a shame

　　D. she'd like to be anything but a teacher

　　(47) The underline sentence "She can help all her pupils, from the brightest to the slowest" means that she can help____________.

　　A. neither the brightest pupils of hers nor the slowest ones

　　B. either the brightest pupils of hers or the slowest ones

　　C. not only the brightest pupils of hers but also the slowest ones

　　D. all her pupils with the white skins or dark skins

　　(48) When well-trained teacher sees the silence of her class, _______________.

　　A. she will teach them a good lesson

　　B. she would get angry

　　C. she will not explain it any more

　　D. she is sure to explain what she has explained over and over again

　　(49) When the pupils can't give her correct answers, ________________.

　　A. she will be kind and patient to them

　　B. she will let them turn red with shame

　　C. she will keep them standing for a long time

　　D. she will order them to think over the question

　　(50) Seeing a teacher was once unkind to a girl, ____________.

　　A. the writer got very unhappy

　　B. the writer put up his hand

　　C. the writer answered the question instead of the girl

　　D. the writer was asked to stand up