2) Choose the best answer to complete the following sentences.(1) According to NIH, some products, such as brain boosters and memory enhancer, are _____ to dementia.
A. helpful
B. harmful
C. futile
D. fatal
查看答案
(2) _____ is new role for cardiovascular system according to investigators.
A. Supply the brain with plenty of oxygen-rich blood
B. Deferring senile dementia
C. Eliminating memory problems
D. Understanding the situation of nerve cells
(3) The following are causes of dementia in older adults EXCEPT _____.
Alzheimer’s disease
B. stroke
C. prescription medications
D. microinfarct
(4) Observational studies refer that _____.
A. the older people get, the higher risk to get high blood pressure
B. the older people get, the less relation happens between hypertension and dementia
C. the older people get, the more relation happens between hypertension and dementia
D. the older people get, the higher risk to get cardiovascular diseases
The author believes that _____.
A. quitting smoking and exercising regularly are beneficial to the heart
B. quitting smoking and exercising regularly are helpful to delaying dementia
C. quitting smoking and exercising regularly are helpful to the brain
D. quitting smoking and exercising regularly are beneficial to the heart and the brain
微信支付 
支付宝支付