2021-2022年高一英语下学期周练试题(I)

2021-2022年高一英语下学期周练试题(I)

一、阅读理解

What happens inside the head of a soccer player who repeatedly heads a soccer ball? That question motivated a study of the brains of experienced players. Researchers at the Albert Einstein College of Medicine in New York selected 34 adults, men and women. All of the volunteers had played soccer since childhood and now peted year-round in adult soccer leagues. Each filled out a detailed questionnaire developed especially for this study to determine how many times they had headed a soccer ball in the previous year, as well as whether they had experienced any known concussions (脑震荡) in the past.

Then the players pleted puterized tests of their memory and other learning skills and had their brains scanned, using a plex new M.R.I. technique which can find structural changes in the brain that can’t be seen during most scans. According to the data they presented, the researchers found that the players who had headed the ball more than about 1,100 times in the previous 12months showed significant loss of white matter in parts of their brains involved with memory, attention and the processing of visual information, pared with players who had headed the ball less.

This pattern of white matter loss is “similar to those seen in traumatic (外

伤的) brain injury”, like that after a serious concussion, the researchers reported, even though only one of these players was reported to have ever experienced a concussion.

The players who had headed the ball about 1,100 times or more in the past year were also generally worse at recalling lists of words read to them, forgetting or fumbling the words far more often than players who had headed the ball less. 1． Where do you think the text es from?

A. Medicine instructions.

B. A text for doctors.

C. A research report.

D. A sports advertisement.

2．What do we know about the volunteers?

A. They had serious injury on the head.

B. They were adults who still played soccer.

C. They were all researchers about soccer.

D. They all had children who played soccer.

3． What was used to find the structural changes in the brains?

A. Advanced puters.

B. A new technique M. R. I.

C. Special questionnaires.

D. Learning skills.

4． We can conclude that frequent heading may have .

A. a significant effect on on e’s brain

B. little effect on one’s brain

C. nothing to do with the brain

D. improvement in one’s brain

Have you ever wondered when dogs first became “man’s best friend” and the world’s favourite pet? If you have then you’re not alone. When and where dog s first began living side-side with humans are questions that have stirred hot debate among scientists. There are a few hard facts that all agree on. These include that dogs were once wolves and they were the first animal to be domesticated(驯养) by humans. They came into lives some 15000 years ago, before the dawn of agriculture.

Beyond that, there is little agreement. The earliest bones found that are unquestionable dogs and not wolves date from 14,000 years ago. However, 30,000-year-old skulls have been discovered in France and Belgium that are not pure wolf and some scientists think could be dogs.

With such puzzling evidence, many scientists are now turning to DNA to find out