题目内容

-- I wonder if you could go with me to the supermarket.

-- Don’t disturb me. I ________ my daily report this morning and haven’t finished yet.

A. write B. was writing

C. have written D. have been writing

 

D

【解析】

试题分析:考查情景交际和时态。句意:--我想知道你是否可以陪我去超市。--还是不要打扰我的好,我整个上午一直在写报告,到现在还没写完。根据答语可知,“我”整个上午一直在写报告,现在还没写好,动作发生在过去并且有可能继续下去,应该用现在完成进行时,故选D。

考点:考查情景交际和时态

 

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1.A. betweenB. beforeC. sinceD. later

2.A. afterB. byC. duringD. until

3.A. meansB. methodC. mediumD. measure

4.A. processB. companyC. lightD. form

5.A. gatheredB. speededC. worked D. picked

6.A. onB. outC. overD. off

7.A. ofB. forC. beyond D. into

8.A. importantB. difficultC. honestD. concrete

9.A. indeedB. henceC. howeverD. therefore

10.A. broughtB. followedC. stimulated. D. characterized

11.A. unlessB. sinceC. lestD. although

12.A. apparentB. desirableC. negativeD. believable

13.A. sharperB. darkerC. heavierD. higher

14.A. decreasingB. increasingC. decliningD. flowing

15.A. by means ofB. in terms ofC. with regard toD. in line with

16.A. deeperB. fewerC. nearerD. smaller

17.A. environmentB. distanceC. skyD. state

18.A. regardedB. impressedC. influencedD. effected

19.A. competitiveB. controversialC. conditionalD. clumsy

20.A. aboveB. uponC. againstD. with

 

Until just a few years ago, we doctors believed that the brain stopped making new neural(神经系统的) connections (meaning that your memory began to get worse) when the body stopped developing, usually in your early 20s. And we knew that, like any other body part, neurons weaken as we age. Loss of brain function due to neural breakdown was assumed to be a normal, unavoidable part of aging.

It turns out that we were wrong. In the past few years, it has been discovered that you can, in fact, make new neurons starting in your 20s and continuing well into old age. You can literally rewire the brain with new parts as the older parts wear out. How? Simple: Keep learning. Just as your body can pack on and condition new muscle, your brain can rebuild used-up neurons.

How strong is the evidence for this? Strong enough that a $200 million industry devoted to brain boosting software (products like Brain Age, MindFit, and Lumosity that supposedly improve your memory function) has sprung up out of nowhere. All “mental fitness” means are keeping your memory intact(everything from phone numbers to how to throw a football). So what can you do to stay smart?

Keep blood pressure down. People with high blood pressure are more likely to develop cognitive impairment later in life.

Eat more vitamins. Like E(in nuts and sunflower seeds), B6 and B12(beef, tuna), and folic acid(leafy greens, citrus, berries), which help keep your brain’s chemistry in balance.

Exercise your brain. This is the best way to rebuild and strengthen those precious neurons. Learn to play chess or the guitar. When you’re at a stoplight, try to recall the starting lineup of the 1983 Celtics. See a movie that doesn’t feature Ben Stiller. Or read, like, a book.

Title: How to keep the 1.________smart?

Previous

2._________

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New

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7._________

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D. Butterflies cannot sense the ultraviolet light.

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A. London Alive

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C. The Missing Photograph

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A. started acting and modeling when she was a little girl

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A. difficulties B. awards

C. salaries D. opinions

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A. her hard work

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A. child stars often take drugs and alcohol

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A. few child stars will succeed in the future

B. there is no way to save the entertainment business

C. the author has a different opinion about child stars

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