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With his attention________on the shops along the roadside，he knocked an old man down while riding to school.
A concentrating B．concentrated C．to concentrate D．concentrates
答案 B
解析 考查词组，故选B项。
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仔细阅读下面的短文，短文中有10个空格或划线句子。请按照每小题括号内的具体要求完成语法填空、词形变化、句子合并、句子改写以及病句改正等。答案填写在标号为1～10的对应位置。
Pollution 1 (be)a problem that happens in water, air and earth．It is 2 (表语)with animals and humans．The water pollution is 3 (cause)by waste from factories．The 4 (fish)will die, if the river polluted by chemical factories．Then if some people 5 (谓语动词)those fish, they will also be dead．The others is air pollution． 6 (改正错误)It comes from factories, power stations and cars． 7 (冠词)chemical in the smoke will fall in the rain．This “chemical rain” will kill trees and fish．It’s either bad to the building． 8 (改正错误)From that we 9 (情态动词)know how bad the pollution is．
We hope that the scientists can find out the way to make environment better soon． 10 (改为形式主语结构)
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Most young people only get seven hours 1 (介词)sleep each night, 2 (对比连词)they actually need nine hours．And 3 (make)up for lost sleep during the week by sleeping 4 (介词)weekends doesn’t really work．In fact, sleeping late may actually do you much harm．You have sleep problems． 5 (合并为主从复合句)What happens if you don’t 6 (谓语动词)enough sleep? If 7 (人称代词)sleep problem continues for a few nights, you could suffer serious 8 (problem)． 9 Lack of sleepy can affect learning and memory．(改正错误) 10 (比较级), sleep difficulties could lead to anxiety or depression(抑郁)．
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Thanksgiving Around the WorldThanksgiving in Canada is much the same as it is in the United States; however, it 1 (celebrate)on a different day－the second Monday in October．In other parts of the world, different cultures also celebrate festivals of thanksgiving．Although they are quite different 2 (介词)the American holiday, they all give thanks for life’s blessings and the celebration of the autumn harvest．
In Great Britain, Harvest festival is celebrated in late September 3 (连词)early October．Special services of thanksgiving 4 (be)held at local churches to honor the day．Decorations include autumn flowers, fruits, vegetables and other food．
Jewish people around the world celebrate Sukkot, a festival of thanksgiving that 5 (last)nine days．For this occasion, a Jewish family will build a booth(棚)called sukka．It is then decorated with leaves, branches, and fruits or vegetables from the new harvest．Tables are set up inside the sukka, so meals 6 (情态动词)be eaten inside．The sukka is also a place to pray．
The Festival of the Autumn Moon, or Zhong Qui, is the Chinese 7 (celebrate)of thanksgiving．It is held on the 8 (eight)month of the Chinese calendar．The Moon Goddess is honored with mooncakes, and children parade with colored lanterns in the evening．
In southern India, people in Kerala hold the harvest festival of Onam．Samaritans give food to 9 (who/those)in need and homes are decorated with flowers．The celebration continues late into the night with spectacular displays of fireworks．
A Lithuanian thanksgiving tradition involves the creation of a boba(meaning old woman)from the last bunch of grain at harvest time．The grain is fashioned into a doll shape and decorated with ribbons(丝带)and flowers．Keeping the boba until spring is believed 10 (keep)the spirit of the crop alive until replanting begins the following year．
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