Text ALearning special phrasesChoose the best answer to explain the underlined phrases in the following sentences.(1) But when she called her doctor's office, he was booked solid, and her symptoms didn't seem to strike anyone as terribly worrisome. (Para.2)

A. busy
B. vacant
C. incompetent

(2) Besides, five months earlier, when she'd been feeling light-headed and tired, she'd undergone a treadmill stress test and had been given a clean bill of health. (Para.3)

A. health check
B. health certificate
C. health care

(3) A few months ago, a shocking study suggested that as children pile on the pounds, they're putting stress on blood vessels and ratcheting up the likelihood of cardiovascular problems in the future. (Para. 5)

A. are growing up
B. are getting fat
C. are losing weight

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

(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

Text B1. Understanding main bodies and points1) Paragraphs 3—6 are the main bodies of the passage. Please choose the correct heading for them from the list of headings below. Write the correct number a--h in spaces 1--4.List of Headingsa. Conclusion made from observational studiesb. Causes of dementiac. Benefits of exercise for the braind. Quitting smoking and doing exercisese. Causes and treatments of dementiaf. Relation between cardiovascular treatment and dementiag. Age and dementiah. Results of a randomized controlled trial of exercise(1) Para.3 _______________________________(2) Para.4 _______________________________(3) Para.5 _______________________________(4) Para.6 _______________________________

Text CUnderstanding the structure of the textThe text can be divided into three parts as indicated by the table below. Please fill in the blanks with one word to complete the main ideas of each part.