It may be 5 or 10 years __________ it is poss...

It may be 5 or 10 years __________ it is possible for people to find a space station on the moon.

A. since              B. before             C. after              D. when

高三英语单项填空中等难度题查看答案及解析

Scientists say it may be five or six years _____ it is possible to test this medicine on human patients.

A. since                   B. after                   C. before     D. when

高三英语单项填空中等难度题查看答案及解析

Scientists say it may be five or six years _____ it is possible to test this medicine on human patients.

A. since　　　　　　　　 B. after　　　　　　 C. before　　　　　　 D. When

高三英语单项填空中等难度题查看答案及解析

Scientists say it may be one year or so ________ it is possible to test the new medicine on human patients.

A. when              B. after                C. before          D. since

高三英语单项填空中等难度题查看答案及解析

Scientists say it may be five years ______ it is possible to test this medicine on human patients．

A. since                B. until                C. before           D. when

高三英语单项填空中等难度题查看答案及解析

___________ the Internet is bridging the distance between people; it may be breaking some homes or will cause other family problems.

高三英语单项填空中等难度题查看答案及解析

Mom’s birthday present? It may be a difficult thing for some people, but for me, it is an easy thing. Mom loved flowers, so every year I sent her flowers. Actually she had a bed of irises (鸢尾花) in the backyard of her small, Indiana farm. They were beautiful. “Take some,” she said, “Dig some up and plant them on the side of your own house.”

But in my yard they became lacking in energy. A year passed, then two, but not one flower appeared. I cut back all their green leaves. I was tired of seeing them so lonely. Finally, I dug the irises up and threw them away.

About that time Mom died unexpectedly. My sister and I sold the farm. I never went back to see the irises. I just couldn’t bear seeing another family living in our home—Mom’s home. Autumn came, then winter. The following spring, as Mom’s birthday approached, I struggled with the question of how to remember her. I stared out the window and saw a few stubborn irises in my side yard sprouting (发芽), —tall, thin but flowerless. Because of seeing them, I decided to order flowers as I always did on Mom’s birthday, and send them to my sister. I wished so badly I could still send flowers to Mom. But that was impossible.

In the morning of Mom’s birthday, I was in my car ready to work. Something in the yard caught my eye. The irises! One had bloomed with flowers, big, showy and purple, as lovely as they ever had been on Mom’s farm. I smiled and turned my eyes upward. I could no longer send flowers to Mom. But somehow, she’d been able to send them to me.

1.According to the first paragraph, Mom ________.

A. wanted to give the author some flowers

B. didn’t like the presents from the author

C. lived with the author on an Indiana farm

D. got different birthday presents from the author every year

2.At first, the irises in the author’s yard ________.

A. all died quickly

B. didn’t bloom at all

C. grew as well as on Mom’s farm

D. grew better than those on Mom’s farm

3.What troubled the author?

A. She didn’t know how to grow irises.

B. She regretted they had sold Mom’s farm.

C. She didn’t know what to do in memory of Mom.

D. She couldn’t bear others living in Mom’s home.

4.After seeing the irises sprouting, the author________.

A. decided to send flowers to her sister on Mom’s birthday

B. dug them out because they were flowerless

C. decided to send them to Mom after they bloom

D. ordered flowers for the people living in Mom’s home

5.What can be learned from the last paragraph?

A. All the irises in the author’s yard bloomed.

B. The author went to see the irises in Mom’s yard.

C. It was Mom who took care of these irises in the author’s yard.

D. The author thought the blooming irises were gifts from Mom.

高三英语阅读理解中等难度题查看答案及解析

Whatever is left over may be put into the refrigerator, _____ it will keep for two or three weeks.

A. when　　　　　　 B. which　　　　　　 C. where　　　　　　　　 D. while

高三英语单项填空中等难度题查看答案及解析

Whatever is left over may be put into the refrigerator，________ it will keep for two or three weeks.(2011·安徽)

A．when　 B．which　 C．where　 D．while

高三英语单项填空困难题查看答案及解析

　A new study has found that it may be possible to train people to be more intelligent，increasing the brainpower they had at birth.

　Until now，it has been widely assumed that the kind of mental ability that allows us to solve new problems without having any relevant previous experience—what psychologists call fluid intelligence—is innate and cannot be taught（though people can raise their grades on tests of it by practicing）.

　But in the new study，researchers describe a method for improving this skill，along with experiments to prove it works.

　The key, researchers found, was carefully structured training in working memory—the kind that allows memorization of a telephone number just long enough to dial it. This type of memory is closely related to fluid intelligence，so the researchers reasoned that improving it might lead to improvements in fluid intelligence.

　First they measured fluid intelligence of volunteers using standard tests. Then they trained each in a complicated memory task—the child’s card game，in which they had to recall a card they saw and heard. During the course, they needed to ignore irrelevant items，monitor ongoing performance，manage two tasks at the same time and connect related items to one another in space and time.

　The four groups experienced a half-hour of training daily for 8，12，17 and 19 days，respectively. To make sure they were not just improving their test-taking skills，the researchers compared them with control groups that took the tests without the training.

　The results, published Monday in The Proceedings of the National Academy of Sciences，were striking. Improvement in the trained groups was a lot greater. Moreover，the longer they trained, the higher their scores were. All performers，from the weakest to the strongest，showed significant improvement.

　“Our results show you can increase your intelligence with proper training.”said Dr Jaeggi, a co-author of the paper.“No one knows how long the gains will last after training stops，”he added，“and the experiment’s design did not allow the researchers to determine whether more training would continue to produce further gains.”

67．The researchers thought the key to improving the intelligence was ______________.

A．memorizing telephone numbers

B．improving working memory

C．training in concentration

D．recalling a card

68．The following aspects of the training help increase intelligence EXCEPT___________.

A．ignoring irrelevant items

B．monitoring ongoing performance

C．managing two tasks at the same time

D．using previous experience

69．When the experiment was conducted，the researchers______________.

A．trained the four groups for the same period of time

B．only made comparisons between the four groups

C．compared the four groups with control groups

D．trained the four groups together

70．By writing the article，the writer intends to ______________.

A．inform the readers of a new study

B．call on people to be trained to increase intelligence

C．prove one’s born brainpower can be improved

D．tell people the improved intelligence will last forever

高三英语阅读理解简单题查看答案及解析