He wanted to telephone the garage for help. The door was opened by one of his patients.
"Oh, Doctor," she said, "I have only just telephoned you. You must have a very fast car. You have got here very quickly in deed. There has been a very bad accident on the road outside. I saw it through the window. I am sure the driver will need your help."
The story took place ______.
A. on a rainy day
B. in summer
C. in September
D. on a cold day
查看答案
下列有关维生素D的叙述,错误的是
A. 维生素D的活性形式是1,24-(OH)-D3
B. 维生素D为类固醇衍生物
C. 活性维生素D可促进小肠对钙磷的吸收
D. 缺乏维生素D的成人易发生骨软化症
E. 维生素D的羟化作用主要在肝肾中进行
A.①→②→⑤→⑦B.①→④→⑤→⑦C.①→③→⑥→⑦D.①→③→④→⑤→⑦
A. ①→②→⑤→⑦
B. ①→④→⑤→⑦
C. ①→③→⑥→⑦
D. ①→③→④→⑤→⑦
If you are like most people, your intelligence varies from season to season. You are probably a lot sharper in the spring than you are at any other time of the year. A noted scientist, Ellsworth Huntington(1876-1947),concluded from other men's work and his own among peoples in different climates that climate and temperature have a definite effect on our mental abilities.
He found that cool weather is much more favorable for creative thinking than is summer heat. This does not mean that all people are less intelligent in the summer than they are during the rest of the year. It does mean, however, that the mental abilities of large numbers of people tend to be lowest in the summer.
Spring appears to be the best period of the year for thinking. One reason may be that in the spring man's mental abilities are affected by the same factors that bring about great changes in all nature.
Fall is the next-best season, then winter. As for summer, it seems to be a good time to take a long vacation from thinking!
According to the passage, your intelligence probably ______.
A. stays the same throughout the year
B. varies from day to day
C. changes with the seasons
D. changes from year to year
Neither rain nor snow (keeps) the postman from delivering our letters (which) we (so much) look forward (to receive).
A. keeps
B. which
C. so much
D. to receive