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1、- 1 - 河北省武邑中学河北省武邑中学 2018-20192018-2019 学年高二英语上学期寒假作业学年高二英语上学期寒假作业 1313 第一节第一节 （共（共 1010 小题；每小题小题；每小题 2 2 分，共分，共 2020 分）分） 阅读下面短文阅读下面短文, ,从每题所给的四个选项（从每题所给的四个选项（A A、B B、C C 和和 D D）中）中, ,选出最佳选项选出最佳选项, ,并在答题卡上将该项涂黑。并在答题卡上将该项涂黑。 A A No one is sure how the ancient Egyptians built the pyramids near Cairo.
2、 But a new study suggests they used a little rock n roll. Long-ago builders could have attached wooden poles to the stones and rolled them across the sand, the scientists say. “Technically, I think what theyre proposing is possible,” physicist Daniel Bonn said. People have long puzzled over how the
3、Egyptians moved such huge rocks. And theres no obvious answer. On average, each of the two million big stones weighed about as much as a large pickup truck. The Egyptians somehow moved the stone blocks to the pyramid site from about one kilometer away. The most popular view is that Egyptian workers
4、slid the blocks along smooth paths. Many scientists suspect workers first would have put the blocks on sleds(滑板). Then they would have dragged them along paths. To make the work easier, workers may have lubricated the paths either with wet clay or with the fat from cattle. Bonn has now tested this i
5、dea by building small sleds and dragging heavy objects over sand. Evidence from the sand supports this idea.Researchers found small amounts of fat, as well as a large amount of stone and the remains of paths. However, physicist Joseph West thinks there might have been a simpler way, who led the new
6、study. West said, “I was inspired while watching a television program showing how sleds might have helped with pyramid construction. I thought, Why dont they just try rolling the things? ” A square could be turned into a rough sort of wheel by attaching wooden poles to its sides, he realized. That,
7、he notes, should make a block of stone “a lot easier to roll than a square”. So he tried it . He and his students tied some poles to each of four sides of a 30-kilogram stone block. That action turned the block into somewhat a wheel. Then they placed the block on the ground. They wrapped one end of
8、a rope around the block and pulled.The researchers found they could easily roll the block along different kinds of paths. They calculated that rolling the - 2 - block required about as much force as moving it along a slippery(滑的)path. West hasnt tested his idea on larger blocks, but he thinks rollin
9、g has clear advantages over sliding. At least, workers wouldnt have needed to carry cattle fat or water to smooth the paths. 28. Its widely believed that the stone blocks were moved to the pyramid site by _. A. rolling them on roads B. pushing them over the sand C. dragging them on some poles D. sli
10、ding them on smooth paths 29. What does the underlined word “it” in Paragraph 7 refer to? A. Rolling the blocks with poles attached.B. Rolling the blocks on wooden wheels. C. Rolling poles to move the blocks.D. Rolling the blocks with fat. 30. Why is rolling better than sliding according to West? A.
11、 Because more force is needed for sliding. B. Because rolling work can be done by fewer cattle. C. Because sliding on smooth roads is more dangerous. D. Because less preparation on paths is needed for rolling. 31. What is the text mainly about? A. An application of the method of moving blocks to the
12、 pyramid site. B. An experiment on ways of moving blocks to the pyramid site. C. An argument about different methods of moving blocks to the pyramid site. D. An introduction to a possible new way of moving blocks to the pyramid site. B With rapid advances in medical science, cloning is slowly but su
13、rely looking like it could be in our near future. However, is it really an option that should be considered as a way to extend human life? Reproductive cloning may help human families gain children, and theres also a benefit for the animal world. It brings hope to people eager for children but unabl
14、e to have their own or adopt. It can also bring about the recreation of species that have long since died, allowing scientists to fully study the species as a living creature instead of simply looking at images or bones. Many believe that cloning can be used to replace failing organs. This will redu
15、ce the waiting list for organ donations and allow more people to be saved. Not only that, but because - 3 - the organ is, in fact, your own organ, there would be less chance of rejection. Cloning could prove helpful in genetic research. Using cloning technologies, genetic researchers would have a be
16、tter understanding of composition of genes and the effects of genetic constituents（成分）on human characters. Theres also the possibility of changing genetic constituents in cloned humans, and cloning could help fight genetic diseases. While the cloning of body organs can help extend human life, it could also cause a lot of malpractice （玩忽职守）. Along with the ability to clone desired characters, there could be the possibility of people deliberately reproducing undesired characte
