根據(jù)下面內(nèi)容，回答題：

　　Where did the movies begin? It is often said that they are an American invention. It is not en-tirely true. The motion picture has been the most international arts. Before the dawn of the twentiethcentury, inventors in France, England and the United States were among the dozens of men who weretrying to develop ways of using photographs to create the effect of motion.

　　Soon after 1889, when the famous inventor Thomas Edison first showed motion pictures througha device called the kinetoscope( 活動(dòng)電影放映機(jī) L) , other devices for the same purpose appeared allover the world. Edison had solved certain problems, making it possible for other inventors move aheadwith their own devices. One other important contribution by Edison was the introduction of 35 mm asthe international standard film width.

　　44That the movies are an American invention is not entirely true. This means that___________.

　　A.it is entirely wrongB.to some degree,it is trueC.it is not true at allD.it is perfectly right

　　參考答案：B

　　參考解析：

　　第一段第三句中的“not entirely true”意為“不完全正確”，也就是B項(xiàng)內(nèi)容。“to somedegree，it is true.”意為“在某種程度上，它是真的”。

　　45When did people try to develop ways of showing motion with photographs?

　　A.Before the twentieth century.B.Early in the beginning of the twentieth century.C.At the dawn of the first day of the twentieth century.D.After the dawn of the twentieth century.

　　參考答案：A

　　參考解析：

　　文中第一段第五句“Before the dawnof the twentieth century…”表明是在二十世紀(jì)之前發(fā)生的。

　　46Why could other inventors succeed in showing r~ion pictures with their own devices?

　　A.Because they had a device called kinetoscope.B.Because they asked Thomas Edison to help them.C.Because they got a way of using their own devices.D.Because Thomas Edison had successfully solved certain problems.

　　參考答案：D

　　參考解析：

　　文中第二段第二句“Edison hadsolved certain problems，making it possible for otherinventors move ahead with their own devices.”給出了答案。

　　47What was another contribution by Edison to the movies?

　　A.He introduced the 35 mm standard machine to the world.B.He introduced the 35 mm as the international standard film width.C.He created a 35 mm standard device for showing movies.D.He created his own standard devices for showing 35 mm film.參考答案：B

　　參考解析：

　　文中第二段最后一句話“One otherimportant contribution by Edison...”正是答案所在。第47000

　　根據(jù)下面內(nèi)容，回答題：

　　Eating in space is different from eating'on, earth. The food that astronauts carry with them doesnot look like the food you eat. Some food is carried in closed bags. It is cooked and frozen' before theastronauts get it. All the water is removed from the food. In the spaceship the astronaut puts the waterback. He "shoots" hot or cold water into the food bag with a special gun. He eats the food through asmall hole in the bag.

　　Other foods come in bite sizes. The astronaut puts a whole piece in his mouth at once. There canbe no crumbs. Crumbs would float around the spaceship and get in the way. Meat and cake oftencome in bite-sized pieces. Astronauts can't drink water from open cups. The water would float indrops in the air. The water is put in the special gun. The astronaut shoots the water into his mouth.Eating in space is not easy. Astronauts must learn to eat this way.

　　48The story does not say this,but from what we have read,we can tell that

　　A.you get much hungrier in space than you doB.you can't have water to drink in a spaceshipC.astronauts must learn many new and different thingsD.you can't eat anything in a spaceship

　　參考答案：C

　　參考解析：

　　根據(jù)對(duì)全文內(nèi)容的把握，可以知道，宇航員在太空的生活不容易，所以他們必須學(xué)會(huì)許多新的與在陸地上生活不同的事情。 、.

　　49Why can't astronauts drink water from cups?

　　A.The water would come from the open cups.B.The water would spill all over their food.C.Crumbs would float in the cups.D.The cups would float in the air.

　　參考答案：A

　　參考解析：

　　文中第二段第七句講述了不能從杯中喝水的原因即“The water would float in drops inthe air.”。

　　50The main idea of the whole story is that

　　A.there is more food and water in space than on earthB.eating and drinking in space is a special problemC.astronauts can never eat or drink in a spaceshipD.there is no food or water in a spaceship

　　參考答案：B

　　參考解析：

　　文中第一段講述了在太空中“吃”，第二段講述了在太空中“喝水”，表明在太空中吃和喝都是特別需要注意的問題。

　　51Which of the following does the story lead you to believe?

　　A.Food for astronauts must be made in a special way.B.All meat on earth comes in bite-sized pieces.C.Astronauts will only eat cakes made from crumbs.D.Astronauts have to go hungry in a spaceship.

　　參考答案：A

　　參考解析：

　　文章第一段提出“All the water is re—moved from the food.”，即所有的太空食品都要脫水處理，因此A項(xiàng)正確。

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