题目:
水稻的花序为()。
A.总状花序
B.圆锥花序
C.穗状花序
D.伞形花序
答案:
参考答案:B
水稻的花序为()。
A.总状花序
B.圆锥花序
C.穗状花序
D.伞形花序
参考答案:B
If you want to stay young, sit down and have a good think. This is the research finding of a team of Japanese doctors, who say that most of our brains are not getting enough exercise—and as a result, we are aging unnecessarily soon.
Professor Taiju Matsuzawa wanted to find out why otherwise healthy farmers in northern Japan appeared to be losing their ability to think and reason at a relatively early age, and how the process of aging could be slowed down.
With a team of colleagues at Tokyo National University, he set about measuring brain volumes of a thousand people of different ages and varying occupations.
Computer technology enabled the researchers to obtain precise measurements of the volume of the front and side sections of the brain, which relate to intellect (智能) and emotion, and determine the human character. (The rear section of the brain, which controls functions like eating and breathing, does not contract with age, and one can continue living without intellectual or emotional faculties.)
Contraction of front and side parts—as cells die off—was observed in some subjects in their thirties, but it was still not evident in some sixty- and seventy-year-olds.
Matsuzawa concluded from his tests that there is a simple remedy to the contraction normally associated with age—using the head. The findings show in general terms that contraction of the brain begins sooner in people in the country than in the towns. Those least at risk, says Matsuzawa, are lawyers, followed by university professors and doctors. White collar workers doing routine work in government offices are, however, as likely to have shrinking brains as the farm worker, bus driver and shop assistant. Matsuzawa’s findings show that thinking can prevent the brain from shrinking. Blood must circulate properly in the head to supply the fresh oxygen the brain cells need. “The best way to maintain good blood circulation is through using the brain,” he says, “Think hard and engage in conversation. Don’t rely on pocket calculators.”
小题1:The team of doctors wanted to find out ________.
why certain people age sooner than others
B. how to make people live longer
C. the size of certain people’s brains
D. which people are most intelligent
小题2:On what are their research findings based?
A survey of farmers in northern Japan.
B. Tests performed on a thousand old people.
C. The study of brain volumes of different people
D. The latest development of computer technology.
小题3:The word “subjects” in Paragraph 5 means ________.
something to be considered
B. branches of knowledge studied
C. persons chosen to be studied in an experiment
D. any member of a state except the supreme ruler.
小题4:According to the passage, which people seem to age slower than the others?
A.Lawyers.
B.Farmers.
C.Clerks.
D.Shop assistants.
某企业购入没备一台,买价100000元,增值税17000元,运杂费1300元,款项以银行存款支付,该笔经济业务编制的会计分录是()。
A.一借一贷
B.一借多贷
C.一贷多借
D.多借多贷
汉译英:“转口贸易”正确的翻译为( )。
A.transaction
B.transferable
C.Undersigned
D.transit trade
锥体骨折在急性期发生水肿,MR图像上是()
A.T1加权像低信号,T2加权像高信号;
B.T1加权像低信号,T2加权像低信号;
C.T1加权像高信号,T2加权像高信号;
D.T1加权像等信号,T2加权像等信号;
E.T1加权像等信号,T2加权像低信号。
以下哪些是本地传送网SDH传输设备维护的基本内容?()
A.开通(指配、配给)
B.发现告警和故障,查障,排障和维修
C.发现性能异常和缺陷,解决由故障引起的性能下降问题
D.建立完整的维护资料