Living with technology

vitamin d made by the action of sunlight on the skin accounts for 90 per cent of the body's supply, but lower levels can also be obtained through food such as fish, eggs and breakfast cereals.
other studies have suggested the vitamin plays a key role in protecting against cancer and heart disease.
36.the passage mentions all of the items listed below except_______.
a. the findings haven’t been confirmed entirely.
b. people become easily infected with some illnesses when they get older.
c. vitamin d obtained through fish, eggs and breakfast cereals accounts for 10 percent of the body’s supply.
d. the discovery could help explain how vitamin d has a positive effect on cancer.
37. the phrase “demonstrate for” in the 7th paragraph probably means________.
a. claim        b. prove        c. think           d. provide
38. it can be inferred that________.
a. women with high levels of vitamin d have shorter telomeres.
b. studies have confirmed the findings.
c. sunshine may be a cause of the risk of skin cancer.
d. if someone has heart disease, sunshine may help him to relieve the disease.
39. the main idea of the passage is that_________.
a. vitamin d can help protect against cancer and heart disease.
b. sunshine helps keep you young.
c. what effect vitamin d has on human’s body.
d. high levels of vitamin d make people keep young.
b
toefl seats to increase by 80%
 eighty percent more chinese students can take the test of english as foreign language (toefl) through the internet at the end of this year, the us educational testing service (ets) has said.
net-based test seats will increase from 1,950 in june to 3,550 at the end of the year, an ets press release said on tuesday.
the ets and china's national education examinations authority worked jointly on their network to meet the increased demand for toefl in china.
advanced technological solutions will be implemented by the ets to monitor the toefl registration website to ensure an open and fair test registration process, according to the ets.
more than 6,000 colleges and universities in 110 countries accept toefl scores. the number of students who want to take the test on the mainland has grown steadily in recent years, with the average staying above 70,000 a year.21世紀教育網
"the ets is committed to ensuring that everyone in china who wishes to take the test gets the chance to do so," ets's global division senior vice-president paul ramsey said.