Living with technology
25.a. foreign b. familiar c. particular d. peculiar
26.a. by b. when c. with d. without
27.a. meet b. see c. hear d. understand
28.a. his b. its c. their d. our
29.a. often b. never c. seldom d. only
30.a. his b. your c. our d. their
31.a. sure b. ensure c. insure d. honest
32.a. for b. but c. though d. as
33.a. usually b. not c. only d. very much
34.a. possible b. impossible c. useless d. important
35.a. country b. people c. language d. customs
三: 閱讀理解(共15小題;每小題2分,滿分30分)
a
a healthy dose of sunshine may be the secret to staying young, british scientists have revealed.
vitamin d is produced naturally by the skin in response to sunlight and may help to slow the aging process and protect against heart disease, according to the study.
researchers from king's college london studied 2,160 women aged between 18 and 79, looking at their telomeres - a biological marker of ageing found in dna. as people get older their telomeres get shorter and they become more susceptible to certain illnesses.
but the study found women with high levels of vitamin d had comparatively longer telomeres - a sign of being biologically younger and healthier.
the study suggests vitamin d may help to slow down the ageing process of dna, and therefore the ageing process as a whole. 21世紀(jì)教育網(wǎng)
lead researcher dr brent richards said: "these results are exciting because they demonstrate for the first time that people who have higher levels of vitamin d may age more slowly than people with lower levels of vitamin d.
"this could help to explain how vitamin d has a protective effect on many ageing related diseases, such as heart disease and cancer."
he said further studies are required to confirm the findings.
professor tim spector, head of kcl's twin research unit, and a co-author of the report, added: "although it might sound absurd, it's possible that the same sunshine which may increase our risk of skin cancer may also have a healthy effect on the general ageing process."