Researcher Dr Jennifer Yokoyama said, “The brain region enhanced by genetic variation in KLOTHO is vulnerable(脆弱的)in aging and some mental disease.In this case, bigger size means better function.It will be important to determine whether the structure increase associated with carrying one copy of KLVS can offset the cognitive shortage caused by disease.”
People who have one copy of a variant KLVS tend to live longer and have lower chances of suffering a stroke (中风),whereas people who have two copies may live shorter lives and have a higher risk of stroke.
()4.What can we learn from the second paragraph?
A.People's cognitive abilities do not decline if people have KLOTHO.
B.With the clear understanding of KLOTHO, Alzheimer's disease can be cured now.
C.Genetic variation in KLOTHO could be helpful in treating mental disease in elderly people.
D.Genetic variation in KLOTHO could lead people to suffer from Alzheimer's disease.
()5.If a person carries two copies of the gene variant, he/she may ________.
A.have better kidney function
B.have a shorter lifespan
C.have a higher level of the protein in his/her body
D.suffer from some cognitive disease
()6.The reason why older people's attention is easily distracted may be that ________.
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