河北省石家庄裕华区2016高考英语 阅读类一轮练习(13)

*** - 1 - 石家庄裕华区2016高考英语 阅读类一轮练习（13） 阅读下列四篇短文，从每小题后所给的A,B,C或D四个选项中，选出最佳选项。

FILTON, just outside Bristol, is where Britain’s fleet of Concorde supersonic（超音速的）airliners was built. There, something remarkable is being created. Little by little a machine is “printing” a complex titanium bracket (钛合金支架), about the size of a shoe, which normally would have to be cut from a solid block of metal. Brackets are only the beginning. The researchers at Filton have a much bigger ambition: to print the entire wing of an airliner.

Unrealistic as this may seem, many other people are using 3D printing technology to create similarly remarkable things. These include medical implants, jewellery, football boots designed for individual feet, lampshades, racing-car parts, solid-state batteries and customized mobile phones. Some are even making mechanical devices (仪器). At the Massachusetts Institute of Technology (MIT), Peter Schmitt, a PhD student, has been printing something that is like the workings of a grandfather clock. It took him a few attempts to get right, but eventually he removed the plastic clock from a 3D printer, hung it on the wall and pulled down the counterweight. It started ticking.

Engineers and designers have been using 3D printers for more than a decade, but mostly to make original types quickly and cheaply before they embark on the expensive business of tooling up a factory to produce the real thing. As 3D printers have become more *** - 2 - able to work with a broader range of materials, including production-grade plastics and metals, the machines are increasingly being used to make final products too. More than 20% of the output of 3D printers is now final products rather than original types, according to Terry Wohlers, who runs a research firm specializing in the field. He predicts that this will rise to 50% by 2020.

1. Which of the following is true according to the passage? A. Filton is in the centre of Bristol. B. Peter tried to print a clock, but in vain. C. a remarkable metal bracket is being created. D. 3D printing technology is available to all of us. 2. The underlined word “embark” probably means “_________”. A. work B. land C. depend D. fix 3. We can conclude from the last paragraph that __________. A. Terry Wohlers’ s firm will make great profits B. the technology of 3D printers will be widely adopted C. 3D printers have been in use for at least 100 years D. engineers and designers prefer printing original products 4. The passage is developed mainly in the form of _______. A. time and events B. definition and description C. contrast and conclusion D. examples and statements *** - 3 - 【参考答案】1—4、 CABD

阅读理解。 The amount of time children spend in institutional care（机构式照顾）may affect how their brains develop. That’s the conclusion of a new study carried out by researchers at the University of Wisconsin, Harvard Medical School and the University of Minnesota. The study is published in Child Development in the journal’s January/ February 2010 issue. To learn how the lack of care and material needs that institutionalized children often experience affect brain development, the researchers looked at 132 8- and 9-year-olds. Some of them were adopted into U.S. homes after spending at least a year and three quarters of their lives in institutions in Asia, Latin America, Russia and Eastern Europe, and Africa. Others were adopted by the time they were 8 months old into U.S. homes from foster care（寄养）in Asia and Latin America; most of these children had spent no time in institutional care, while some had spent a month or two in institutions prior to foster placement. On average, the internationally adopted children had been living with their families for more than 6 years. These children were compared to a group of American children raised in their birth families. Children adopted early from foster care didn't differ from children raised in their birth families in the United States. Children adopted from institutional care performed worse than those raised in families on tests measuring visual memory and attention, learning visual information, and impulse （冲动）control. Yet these children performed at developmentally appropriate levels on tests involving sequencing and planning. The take-home message: Children make tremendous advances in cognitive（认知的） functioning once they reach their adoptive families, but the early impact on their brains' development is difficult to change completely. "We identified basic learning processes that are affected by early