Ten minutes of gentle exercise can immediately change how certain parts of the brain communicate and coordinate(协调）with one another and improve memory function,according to an
encouraging new study.
The scientists invited 36 people of different ages to the lab and had them sit quietly on a fixed
bicycle for 10 minutes or,on a separate visit,pedal the bicycle at a pace so gentle that it barely raised their heart rates.It also was short,lasting for only 10 minutes.Immediately after each session of the sitting or slow pedaling,the people completed a computerized memory test during which they would see a brief picture of,for instance,a tree,followed by a variety of other images and then a new image of either the same tree or a similar one.The people would press buttons to show whether they thought each image was new or the same as an earlier shot.The test is difficult,since many of the images closely resemble one another.It requires rapid,skillful scanning recent memories to decide whether a picture is new or known.Next,the scientists had each person repeat this process-riding or sitting on the bike for 10 minutes and then completing memory testing-but the testing now took place inside an M.R.I.machine(磁共振成像仪）that scanned the people's brains while they responded to the images.
Then the researchers compared results,The effects of the exercise were clear,The people were better at remembering images after they had ridden the bike,especially when the images most closely resembled one another.In other words,the harder their memories had to do their best,the better they performed after the exercise.The M.R.I.scans showed that memory parts of each person's brain lit up at the same time with parts of the brain associated with learning,indicating that these physically separate parts of the brain were better connected now than when the people had not first exercised.
28.Which can replace the underlined word in the second paragraph?
A.picture B.film C.remark D.scene
29.According to the passage we know that__?
A.a ten minutes"exercise is the best method of memorizing things.
B.the brain works better when a person frequently exercises.
C.exercise can help different parts of the body work together.
D.memory function can be improved after gentle exercise.
30.The study result will be most beneficial to
A.a player competing in bicycle riding
B.a young man crazy about experiments
C.a student preparing for an examination
D.a retired man taking exercise in the park
31.Why does the writer write the article?
A.To urge people to exercise before learning.
B.To present an inspiring new study result.
C.To show how an M.R.I.machine works.
D.To prove the good effects of exercise.
答案 28-31 ADCB
encouraging new study.
The scientists invited 36 people of different ages to the lab and had them sit quietly on a fixed
bicycle for 10 minutes or,on a separate visit,pedal the bicycle at a pace so gentle that it barely raised their heart rates.It also was short,lasting for only 10 minutes.Immediately after each session of the sitting or slow pedaling,the people completed a computerized memory test during which they would see a brief picture of,for instance,a tree,followed by a variety of other images and then a new image of either the same tree or a similar one.The people would press buttons to show whether they thought each image was new or the same as an earlier shot.The test is difficult,since many of the images closely resemble one another.It requires rapid,skillful scanning recent memories to decide whether a picture is new or known.Next,the scientists had each person repeat this process-riding or sitting on the bike for 10 minutes and then completing memory testing-but the testing now took place inside an M.R.I.machine(磁共振成像仪）that scanned the people's brains while they responded to the images.
Then the researchers compared results,The effects of the exercise were clear,The people were better at remembering images after they had ridden the bike,especially when the images most closely resembled one another.In other words,the harder their memories had to do their best,the better they performed after the exercise.The M.R.I.scans showed that memory parts of each person's brain lit up at the same time with parts of the brain associated with learning,indicating that these physically separate parts of the brain were better connected now than when the people had not first exercised.
28.Which can replace the underlined word in the second paragraph?
A.picture B.film C.remark D.scene
29.According to the passage we know that__?
A.a ten minutes"exercise is the best method of memorizing things.
B.the brain works better when a person frequently exercises.
C.exercise can help different parts of the body work together.
D.memory function can be improved after gentle exercise.
30.The study result will be most beneficial to
A.a player competing in bicycle riding
B.a young man crazy about experiments
C.a student preparing for an examination
D.a retired man taking exercise in the park
31.Why does the writer write the article?
A.To urge people to exercise before learning.
B.To present an inspiring new study result.
C.To show how an M.R.I.machine works.
D.To prove the good effects of exercise.
答案 28-31 ADCB
苏19057182-3号