2020-2021学年衡阳市欧阳遇实验中学高三英语三模试卷及答案

2020-2021学年衡阳市欧阳遇实验中学高三英语三模试卷及答案

第一部分阅读（共两节，满分40分）

第一节（共15小题；每小题2分，满分30分）

阅读下列短文，从每题所给的A、B、C、D四个选项中选出最佳选项

A

Older adults who sleep six hours or fewer a night may have elevated risk for dementia(痴呆症) and other cognitive (认知的) issues, a new study finds.

Researchers at Stanford University measured seniors' (ages 65 to 85) dementia risk and cognitive abilities, finding higher risk in those patients who regularly slept six or fewer hours compared to those who slept seven or eight hours. Those seniors who slept nine or more hours also had lower cognitive functions and other health issues, but the researchers didn't find the same high dementia risk in this group.

The findings demonstrate how important it is for adults to maintain a healthy sleep cycle, especially as they get older.

As adults age, it's common for their sleep patterns to change or becomedisrupted— leading to longer, shorter, or more irregular sleep. This disruption may be linked to Alzheimer's and other forms of dementia, impacting seniors' ability to remember information, problem-solve, and go through everyday behaviors. Sleep disruption can also be caused by or heighten depression, cardiovascular disease（冠心病）, and other conditions.

A recommended sleep time for seniors is seven to eight hours, the researchers said. Six or fewer hours corresponded to short sleep, while nine or more hours corresponded to long sleep.

The Stanford researchers measured levels of beta amyloid, a protein in the brain that is typically found in high levels when a patient develops Alzheimer's. In addition, the researchers used several tests for memory, attention, spatial skills, and executive function to identify patients' cognitive abilities. Those patients sleeping for six hours or fewer a night were more likely to develop dementia, the researchers found. The low-sleep patients had higher levels of beta amyloid.

The Stanford researchers found that patients with lower sleep also performed worse on memory tests, while those with higher sleep (more hours) performed worse on executive function tests，which measure the brain's ability to switch between different tasks.

―The main takeaway is that it is important to maintain healthy sleep late in life, Winer told CNN.

1. What does the underlined word “disrupted” in paragraph 4 mean?

A. difficult

B. disordered

C. dissolved

D. different

2. According to the findings, which of the following is NOT related to the disrupted sleep?

A. It is more likely to cause old people to have bad memories over issues.

B. It may contribute to dementia, cardiovascular disease and other illnesses.

C. Some daily behaviors perhaps differ from those whose sleeping is normal.

D It tends to bring all the old people to undergo brain scans and cognitive tests.

3. What can we infer from the study?

A. A proper sleep time for seniors is seven to eight hours.

B. Low and high sleep patients were both poor at memory tests.

C. Executive function test is applied to measure the capacity of brain.

D. Keeping a healthy sleep for older adults late in life is crucial.

B

A company called Neuralink has shared a video which appears to show a monkey playing a video game, but what makes the video even stranger is that themonkey is playing the video game with just its mind.

Neuralink is a company owned by Elon Musk, which is working to develop devices that could allow people to control things using just their brains. The monkey in the video is called Pager, having special "Link" devices inside his brain. These devices are connected to 2,048 wires which lead to the parts of Pager's brain that control movements of the arms and hands.

Scientists taught Pager to play a video game using a banana juice as a reward when he playedthe game correctly. Soon Pager was eager to play well in order to get more smoothie. At first, Pager controlled the video game using a joystick (操纵杆). But as Pager played, his Link devices wirelessly sent out information about the signals his brain was using to control his arms and hands. Neuralink's scientists recorded all of these signals.

Then they used computers to match up the signals from Pager's brain to the movements that his hands were actually doing. This was challenging work and the scientists counted on artificial intelligence (AI) to help them decode (解码) Pager's brain signals.

The next step was to have a computer make moves in the video game as if Pager had actually moved the joystick. If Pager thought about moving the joystick up, the computer would send an "up"signal to the video game. Thus Pager was able to play the video game using just his brain.

When people are paralyzed (瘫痪的), it's often because the brain has lost the ability to send signals to nerves and muscles in certain parts of the body. Neuralink hopes that one day, its system will be ableto send this