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Despite helping to record events, photos could damage our memories. Researchers found people who take pictures have【C1】______remembering what actually happened. This phenomenon has been named 'photo-taking impairment effect'. From childrens birthdays to that long-awaited family holiday, we all want to remember those【C2】______moments with a photograph.【C3】______if youre one of those people who cant stop【C4】______beware then—you could【C5】______forgetting it all in a flash. A study has found that taking too many photos may prevent us from forming detailed memories. Researchers from Harvard University, the University of Wisconsin-Madison and Columbia University in the U.S. recently found that many people now use the Internet【C6】______a memory. They claimed that when someone wants to know something they now use the Internet【C7】______an 'external memory' just as computers use an external hard【C8】______. The study continued that we are now so【C9】______on smartphones and laptops, we go into 'withdrawal when we cant find out something【C10】______'. Far from helping us to【C11】______the moment, it could mean we miss whats going on right in front of our noses. Researchers led a group of students around a museum and asked them to either photograph or try to remember certain works of art and historical【C12】______. The next day, their memory was tested. It showed they were【C13】______at recognizing objects they had photographed than those they had only looked at. They were also poorer at【C14】______details of the objects they had taken pictures of. Dr Linda Henkel, who conducted the study at Fair field University in Connecticut, said: 'People so often【C15】______out their cameras almost mindlessly. When people rely on technology to remember for them, it can have a【C16】______impact on how well they remember their【C17】______.' Previous studies have suggested that【C18】______old photos can help us remember, but only if we spend long enough doing it. 'In order to remember, we have to【C19】______and interact with the photos, rather than just【C20】______them,' said Dr Henkel.
【C1】
A.puzzle
B.trouble
C.difficulty
D.fuss

A.【C3】______if
B.S.
C.'
D.
【C1】
A.puzzle
B.trouble
C.difficulty
D.fuss


【参考答案】

B
本文第一句指出拍照会损伤记忆(damageourmemories),本句进一步进行解释,说拍照的人记忆所发生事情的情况。既然拍照会损伤记忆,那么在记忆事情时肯定有困难。因此选B项,havetroubledoing…意为“做……困难”。
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未分类题Peek through the inspection windows of the nearly 100 three-dimensional (3D) printers quietly making things at RedEye, a company based in Minnesota, and you can catch a glimpse of how factories will work in the future. It is not simply that the machines run day and night【C1】______by just a handful of technicians.【C2】______it is what they are making that shows how this revolutionary production process is【C3】______the manufacturing mainstream. 3D printers make things by building them up, a layer at a time,【C4】______a particular material, rather than【C5】______it by cutting, drilling or machining—which is why the process is also called additive manufacturing. There are many ways in which this can be done, and with only a【C6】______adjustment of software each item can be different,【C7】______the need for costly retooling of machines. This has made 3D printing a【C8】______way to make one-off items, especially prototype parts, mock-ups, small mechanical【C9】______and craft items. And that is about all that 3D printers are good for,【C10】______the doubters. Chief among them is Terry Gou, the boss of Foxconn. He thinks 3D printing is just 'a trick' without any【C11】______value in the manufacture of real finished goods, and he has vowed to start spelling his name backwards if【C12】______wrong. Mr. Gou is right about one thing: additive manufacturing is not about to replace mass manufacturing.【C13】______the technology is improving, the finish and durability of some printed items can still【C14】______what producers require. And nor can 3D printers produce millions of【C15】______parts at low cost, as mass-production lines can.【C16】______3D printers have their【C17】______which is why they are starting to be used by some of the worlds biggest manufacturers, such as Airbus, Boeing, GE, Ford and Siemens. The market for 3D printers and【C18】______is small, but growing fast. Last year it was worth $2.2 billion worldwide, up 29% from 2011. As producers become more【C19】______with the technology, they are moving from prototypes to final【C20】______.【C1】A.designedB.attendedC.introducedD.bought