
Those who said they could remember chose the correct pairing 87 per cent of the time during both tests.Those who said they had forgotten got about half right.The participants who were unsure guessed correctly 57 per cent of the time after 30 minutes and 54 per cent after 24 hours.These results were slightly higher than would be expected by chance,which suggests this group may actually have remembered. When the guessers chose the right answer,the same activation patterns were seen in the right hippocampal()region of the brain as in those who remembered,which implies the engrams of forgotten memories remained and were influencing their choices.In the tests done 24 hours later,the engrams of memories that people correctly guessed stayed within the hippocampus,while those they could remember were distributed throughout the neocortex(大脑新皮层), The work shows there can be a disconnection between the memory we consciously access and the related engram in the brain.As researcher Amy Milton explains,"Some memories don't necessarily need to be consciously retrieved()in order for those memories to influence behaviour." 28.What does the underlined word"engram"in paragraph 2 probably mean A.A tool used to measure memory. B.The process of forming memory. C.The feeling of remembering something. D.A network of brain cells storing memory. 29.What is paragraph 3 mainly about A.Participants and materials. B.Functions of brain scans. C.Research methods and procedures. D.Causes of forgotten memories. 30.Why did researchers study those who were unsure A.To identify inattentive participants B.To compare brain activity patterns. C.To see if guessing reveals hidden memories. D.To prove that all memories can be recalled. 31.What is the key finding of the study in the passage A.Forgotten memories influence behavior unconsciously B.All memory traces are stored in the same part of brain C.Forgotten memories can be fully recovered with effort. D.Conscious recall is necessary for memories to affect choices. D In 2013,the World Health Organization (WHO)set an ambitious goal:reduce the global physical inactivity rate by 10 percent by 2025.However,despite numerous public health campaigns and efforts tied to the Olympic Games,people are moving less than ever.The latest data indicates that 31 percent of adults worldwide aren't meeting physical activity guidelines,a 5-percentage-point increase from 26 percent in 2010.Among teens,the numbers are worse:81 percent aren't moving enough. 高三英语第6页共12页
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