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Every day Jeff 1 （put）on an man?made leg.The leg is plastic.With the plastic leg,Jeff can ski,ride 2 （冠词）bicycle,swim and play soccer.He can also run.When he 3 （be）22 years old,Jeff ran across the United States,from the East 4 ?（介词）the West.He ran 5150 kilometers， 5 it was about 26 kilometers each day（改成非限制性定语从句）.Jeff wore out 36 pairs of 6 （run）shoes and five plastic 7 （leg）.On his way,people in every city gave Jeff money.The money that Jeff received was not for 8 （反身代词）.It was for the American Cancer Society.The Society used the money 9 learn（不定式）about cancer.At the same time,Jeff talked to people about cancer.He also talked about being disabled.Jeff is disabled，
?10 he can do many things （构成并列句）.
查看习题详情和答案>>It's no secret that most busy American mothers use the TV set [21] （介词）a live-in babysitter. In some families the TV holds a child's attention for half [22] （冠词）hour or two while mom works on dinner; in others it is the child's constant daytime companion. Is there any harm in this?
Debate on the question is very hot, and periodically research is published [23] （show）that TV reduces attention space, makes children upset or causes them to be violent. In today's cartoon David Horsey makes [24] of （短语动词）the show-off of "children's TV". It is said [25] （从属连词） the special programing supposedly uses entertainment to help youngsters to learn to read and take their [26] （数词） steps in the big, diverse world outside their family. But what do children really get from this programming?
Horsey's suspicion is [27] （从属连词）children's programming chiefly turns kids into TV addicts(上了瘾的人), not into readers or happy mixers. The kids, still at their early age, are attracted by the figures on the screen. "Can you say TV?" The [28] （soon） the kid learns the word, the more effectively he can remind his mother to turn on the TV.
A child hooked on TV tends [29] （构成非谓语动词） fix his eyes on commercial advertisement, and there are plenty of those targeting children of all ages. Thus, at the very least, mom tries to search for a certain way to make the kids quiet and peaceful , hence changing a child [30] （介词） an American shopper all day long. Spending too much time on the tube will have an ill effect on the kids.
查看习题详情和答案>>以下是从本单元课文中摘出的原句。试试看，能填上吗？要注意词形变化！
1．Imagine a world without paper!________ ________ ________ no books, no newspapers, nothing ________ ________ ________ ________．
2．________ ________ some ceremonies in which they were used, oracle bones also record historical events, royal activities, information about natural phenomena and farming techniques．
3．People wrote by carving words on ________ strips known ________“inscribed bamboo”or“wooden strips”
4．In the Eastern Han Dynasty students and scholars ________ ________ ________ ________ ________ something cheaper and more convenient ________ ________ ________ ________．
5．In the year 105 AD, Cai Lun reported his accomplishment to the emperor and his method ________ soon ________ ________ all parts of the country．
6．The first two stages in the development of civilized man were probably ________ invention of ________ primitive weapons and ________ discovery of ________ fire, although nobody knows when he acquired ________ use of ________ latter．(在必要的地方填入冠词)
7．The origin of language is also unclear．________ ________ it began very gradually．
8．Agriculture ________ ________ violent resistance from the people who lived a moving life on the grassland, but the agricultural way of life became popular in the end ________ ________ the physical comforts it provide．
9．There was progress…but neither of these can ________ ________ ________ in their revolutionary power to ________ things ________ speech and writing and agriculture．
阅读下面短文，按照句子结构的语法性和上下文连贯的要求，在空格处填入一个适当的词或使用括号中词语的正确形式填空。
The Internet has become part of young people’s life． 1 (冠词)report shows that 38％of students often use the Internet．Most of them get 2 (use)information on the Internet 3 (连词)use the Internet to help in their studies．But many students don’t use it 4 (介词)a good way．Some play games too much, some visit websites 5 (代词)shouldn’t look at．So bad things may happen 6 students spend too much time on the Internet．
7 is important for students to use the Internet properly．Now we have a textbook, 8 uses many examples to teach students some good ways to use the Internet．It gives useful advice．
Some students also make 9 on the Internet．But if you want to have a face-to-face 10 (meet)with your online friends, let your parents know and meet in a proper place．