阅读下面材料，在空白处填入1个适当的单词或括号内单词的正确形式。Many athletes have been told that smiling while -组卷网

题型：语法填空-短文语填难度：0.15 引用次数：1199 题号：8645012

阅读下面材料，在空白处填入1个适当的单词或括号内单词的正确形式。

Many athletes have been told that smiling while 1 (sweat) will make our efforts feel easier. A marathon runner smiled widely through the final miles of his fastest-ever marathon; afterward, he said what he had hoped 2 (be) that the smiling would ease him to the finish line; But there has been little solid scientific evidence to support this idea. In recent years several past studies 3 (examine) whether deliberately smiling can make changes to how people feel psychologically during races, 4 few have looked at the physical effect 5 sports performance.

Researchers decided 6 (gather) a group of experienced recreational runners and have them alternatively smile broadly as they ran. Many of the runners found it difficult to smile throughout the whole session, though. Their smiles became 7 (increase) fixed and unnatural. Such false smiles make 8 (few) facial muscles (肌肉) start working than the sincere version and most likely result in less 9 (relax) and performance improvement. So the key to using a happy smile to make you 10 better runner may be to smile sincerely and often near a race’s end, but in 30-second bursts, rather than constantly.

19-20高三上·江西南昌·开学考试查看更多[2]

更新时间：2019-09-28 15:44:58 |

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【知识点】科普知识

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【推荐1】Directions: Read the following passage. Fill in the blanks to make the passage coherent and grammatically correct. For the blanks with a given word, fill in each blank with the proper form of the given word. For the other blanks, use one word that best fits each blank.

Imagine a drug that could enhance a child’s creativity and critical thinking. Imagine that this drug were simple to make, safe 1 ( take) and could be had for free.

The nation’s leading pediatricians (儿科医生) say this miracle compound exists. In a new clinical report, they are urging doctors to prescribe (开处方) 2 to the children in their care.

What is this wonder drug? Play.

“This may seem old-fashioned, 3 there are skills to be learned when kids are not told 4 to do,” said Dr. Michael Yogman, a Harvard Medical School pediatrician. 5 it is physical play, outdoor play, or social or pretend play, kids draw important lessons from the chance to make things up as they go along, he said.

The advice, 6 was issued in August by the American Academy of Pediatrics (美国儿科学会), may come as a shock to some parents. After they spend years 7 (worry) over which toys to buy, which apps to download and which skill-building programs to send their kids to after school, letting them simply play — or better yet, playing with them — may seem like a step backward.

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Global warming could make humans shorter.Scientists claim to have found evidence that it caused the world's first horses 1 (become) smaller nearly 50 million years ago.In fact，a team from the universities of Florida and Nebraska says, 2 has found a link between the earth heating up and the size of horses，during the last time the world heated up.The scientists used fossils to follow the evolution of horses from their earliest 3 (appear)56 million years ago.As temperatures went up，their size went 4 . The scientists say that the current warming could have the same effect 5 mammals and could even make humans 6 (small)．“Horses started out small，about the size of a small dog.What's 7 (surprise) is that after they first appeared，they then became even smaller and then dramatically increased in size，and that 8 (exact)corresponds to(符合)the global warming event，followed by cooling.”“It had been known that mammals 9 (be) small during the last warm time， 10 we hadn't realised that temperature specifically was driving the evolution of body size，”Dr Bloch said in the Science journal.

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Global warming could make humans shorter, warn scientists who are said 1 （find）evidence that it caused the world’s first horses to shrink nearly 50 million years ago.

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“As temperatures went up, 4 （they）size went down, and vice versa; at one point they were as small as a house cat,” said Dr. Jonathan Bloch, curator of the Florida Museum of Natural History. The scientists say that the current warming could have the same effect 5 mammals — and could even make humans 6 （small）.

Horses 7 （start）out small, about the size of a small dog like a miniature schnauzer. 8 is surprising is that after they first appeared, they then became even smaller and then dramatically increased in size, and that 9 （exact）agrees with the global warming event. “It had been known that mammals were small when it was warm, 10 we hadn’t understood that the temperature really was driving the evolution of body size,” Dr. Bloch said in the Science journal.

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