The time that high tide occurs at a particular place is affected by all of the following E
A. the direction of the wind
B. channels in the sea bottom
C. variations in the coast line
D. the position of the moon
A. the direction of the wind
B. channels in the sea bottom
C. variations in the coast line
D. the position of the moon
Women couldn’t become teachers easily at that time because__________ .
A.most wonen wanted to be nurses rather than teachers
B.most high schools and colleges accepted men only
C.there were too many women entering the profession
D.they were mostly hired as typists in the business world
A visit to a doctor’s office costs from fifteen to fifty dollars. It is impossible to pay for the medical care they need. Many people in the United States think that doctors are overpaid. Most doctors, however, disagree. They say that they were required to study medicine for a long time. Tuition(学费)for many years of medical education costs a lot of money. Doctors say that it is necessary for most medical students to borrow money from a bank to pay their tuition. Because this money must be repaid to the bank, young doctors need a lot of money for their work. So, they charge people high prices for medical care. Therefore it is possible that the high cost of medical care in America is unnecessary. Because high tuition is one cause of high costs, one way to lower costs would be to have medical schools that are free or have low tuition.
Some people do not have their medical care they need because ______.
A.they are not willing to pay high tuition for the doctors
B.they don't think it necessary to have medical care
C.they don't want to spend much money on it
D.they haven't got enough money to pay for it
After she graduated from high school, Mrs. Cox went on to college. Four years later, she received her bachelor's degree (B. A. ) in English and her teaching certificate. Then she was qualified to teach in the secondary schools of her state. In the summers, Mrs. Cox takes more classes. Someday she hopes to get a master's degree (M. A. ). With an M. A. , she will receive a higher salary.
The school day at Mrs. Cox's high school, like that in many high schools in the United States, is divided into six periods of one hour each. Mrs. Cox must teach five of these six periods. During her free period, which for her is from 2 to 3 p.m. , Mrs. Cox must meet with parents, order supplies, make out examinations, check assignments, and take care of many other things. In short, her free period isn't really free at all. Mrs. Cox works steadily from the time she arrives at school in the morning until the time she leaves for home late in the afternoon.
Mrs. Cox wants to be a teacher because______.
A.she likes teaching
B.she is a young girl
C.she has many problems to deal with
D.she doesn't mind what she is doing
Mom is always there; she had soup ready in the breakfast room by the time that Ann and Jim and I get home. Ann and Jim have never gone in for the cafeteria, either. Our house in only about a ten-minute walk from the school building, so we can make it back in plenty of time.
There's something about eating in the cafeteria--and not leaving the high school from morning until afternoon -- that feels a little like being in prison. By the end of the morning, I've got to get out of the building. And Mom never seems to mind fixing lunch for us; she never suggests that we eat in the cafeteria.
It's really the only time we have to be alone with her. In the morning Dad's there, and by the time I get home after messing around(混时间) after school, he's usually at home from work. So the time that Mom and I talk together is usually at lunch.
I feel sorry for the students who eat in the cafeteria every day. It would drive me mad, I don't know if their moms just don't like to cook for them in the middle of the day, or if they actually like the cafeteria and the cafeteria food.
When the author was in junior high school, ______.
A.he never ate in the cafeteria
B.he ate in the cafeteria sometimes but not often
C.he always went back for lunch
D.he often ate in the cafeteria
For this reason, fast food restaurants have become very popular. These restaurants serve foods such as hamburgers, tacos, French fries. Fast-food restaurants are really fast. You don't have to wait a minute or two for your food. They are also convenient. You may dress casually, and in some places you can even order from your car and drive away with your food without going to the restaurant. Finally, fast-food restaurants are inexpensive.
Fast food has its shortcoming, too. Most fast-food meals are not very healthy. They are often high in fat and cholesterol(胆固醇), and low in other important nutrients(营养). It is advisable not to eat too much those fast food.
Most American people______, so fast-food restaurants have become popular.
A.hate to dine with their family
B.like fast food'very much
C.don't have enough time to eat dinner together with their family
D.live on fast food
High Stress May Damage Memory
According to a report issued in May 1998,elderly people who have consistently high b1ood levels of cortisol don’t score as well on memory tests as their peels with lower levels of the stress hormone.What’s more. high 1evels of cortisol are also associated with shrinking 0f the hippocampus,a region of the brain that plays a key role in learning and memory.The 6ndings suggest that even cortisol levels in the normal,“healthy” range can actually accelerate brain aging.
The study results “now provide substantial evidence that long—term exposure to adrenal stress hormones may promote hippocampal aging in normal elderly humans,”write Nada Porter and Philip Landfield of the University of Kentucky in Lexington in their editorial.Cortisol is a hormone released in response to stress by the adrenal glands,which sit on top of the kidneys.
Over a 5 to 6一year period,Dr. Sonia Lupien and his colleagues measured 24一hour cortisol levels in 51 healthy volunteers,most of Whom were in their 70s.
Despite wide variation in cortisol levels.the participants could be divided into three Subgroups:those whose cortisol progressively increased over time and was currently high(increasing/high):those whose cortisol progressively increased over time and was currently moderate(increasing/moderate);and subjects whose cortisol decreased,but Was currently moderate(decreasing/moderate).
The researchers tested the volunteers’ memory on six people in the increasing/high category and five people in the decreasing/moderate group.The groups did not differ on tests of immediate memory,but the increasing/high cortisol group had other memory problems compared with those in the decreasing/moderate group.
The researchers also found that the total volume of the hippocampus in those in the increasing/high group was 14% lower than those in the decreasing/moderate group,although there were no differences in 0ther brain regions.
The results suggest that brain aging Can be accelerated by levels of adrenal hormones that are not generally regarded as pathological and that variation within this normal range is related to variation in the rate of brain aging.”write Porter and Landfield.“This further suggests that chronic stress may accelerate the worsening of hippocampus.”
第 26 题 The part of the brain important for a person’s learning and memory is.
A.the cortisol.
B.the adrenal glands.
C.the stress hormones
D.the hippocampus.
Which of the following is right?
A.After getting into the plane Henry found his seat and sat down at once.
B.Henry sat down in }lis seat and fastened the seat belt without any help.
C.Thanks to the air hostess, Henry knew how to find his seat and fasten the seat belt.
D.With the help of the hostess, Henry got into the plane.
At Burlington High in suburban Boston, Principal Patrick Larkin says the $ 500 ipads is better than textbooks in the long term, though he said the school will still use traditional texts in some courses if suitable electronic programs aren’t yet available. Larkin said of textbooks, “but they’re pretty much outdated the minute they’re printed and certainly by the time they’re delivered”.
But some experts warn that the districts need to ensure they can support the wireless infrastructure (设施), repairs and other costs that accompany a switch to such a tech - heavy approach. Mark Warschauer, an education and informatics (信息学) professor said, “I think people will like it. I really don’t know anybody in high school that wouldn’t want to get an iPad,” he said. “We’re always using technology at home, then when you’re at school it’s textbooks. So it’s a good way to put all of that together.” Districts are varied in their policies on how they police students’ use.
And the nation’s textbook publishing industry, accounting for $ 5. 5 billion in yearly sales to secondary schools, is taking notice of the trend with its own shift in a competitive race toward developing curriculum specifically for ipads. Jay Dickey, executive director of the Association of American Publishers, schools division, said all of the major textbook publishers are moving toward electronic offerings, but at least in the short term, traditional bound textbooks are here to stay. “I think one of the real key questions that will be answered over the next several years is what sort of things work best in print for students and what sort of things work best digitally.”
The first paragraph is mainly about________________ .
A.a program to promote ipads marketing in new school year
B.a program to spread electronic learning in new school year
C.a plan of how to use ipads in the coming school education
D.a plan of how to oppose IT technique in the coming school teaching
What’s the problem for ipads to be used in schools at presentA.Some students wouldn’t like to have ipads in schools.
B.The ipads are too expensive for school students to buy.
C.Most experts oppose the idea that ipads replace paper textbooks.
D.The ipads may be unavailable for some traditional courses.
The underlined sentence in the passage implies that .A.traditional textbooks are behind the times before they are printed
B.traditional textbooks possibly need to he printed again before delivered
C.contents of traditional textbooks can’t be renewed in time as electronic ones do
D.the ipads can deliver information much more rapidly than printed textbooks
From the passage we can draw conclusion that .A.more students tend to use printed textbooks rather than electronic ones
B.textbook publishing houses will develop more electronic textbooks of their own
C.it is impossible for the ipads to be widely used in schools in the future
D.electronic textbooks will take the place of printed ones in new school year
请帮忙给出每个问题的正确答案和分析,谢谢!
It is high time that such a practice ______ an end to.
A.is put
B.be put
C.was put
D.must be put
I think it is high time that Mr. Smith ______ his mind.
A.make up
B.makes up
C.made up
D.will make up
(It) is high time (that) you (stop) hanging about and (started looking for) a job.
A.It
B.that
C.stop
D.started looking for