完形填空阅读下面短文,从短文后各题所给的四个选项(A、B、C和D)中,选出可以填入空白处的最佳选项。

It is universally acknowledged that fresh food is beneficial to our health. As a small child, I didn’t know about the benefits of fresh food. ____, I considered canned fish and fruit, bottled soft drinks and ____ snacks to be the most appetizing (令人垂涎的). As I learned to prefer fresh and ____ foods to the artificial taste of chemically-enhanced snacks, I began to ____ starting a vegetable garden in our backyard.

“What would it take?” I asked my mom. We had the space and were ____ to take care of the plants every day. ____ doing some research online, we ____ to dig out a space of 16 square feet in our yard. It would have to be at least a foot deep ____ with a raised vegetable bed, the vegetables would have two feet of depth to grow.

It was February of 2013. We knew that we had to work ____ if we wanted to plant vegetables that spring. That month, every day after school, I pushed ____ the tough clay (粘土) under our lawn with a large shovel (铲子). Luckily, the rain made the soil ____, and before we knew it, we had finished digging the bed. Next came my favorite part: shopping for ____ and plants. By June, our plants, especially the tomatoes, were growing ____. We had never ____ such fresh tomatoes; they were so sweet that you could almost taste the ____ in them. To give our friends gifts, we packed jars of our little tomatoes. We also ____ Italian pasta sauce with our tomatoes and basil (罗勒,一种香料). It reassured (使…放心) us to know that we were eating healthy and fresh produce.

The work we put into our vegetable garden was ____ worthwhile. As long as we had the ____ to start and maintain the garden, we ____ a bountiful (大量的) harvest for the entire summer and fall in return. Thanks to the success of my vegetable garden, I can say that if the ____ of life is to be happy, I’m one little step closer.

1.A. OtherwiseB. InsteadC. ThereforeD. Likewise

2.A. preparedB. preservedC. preventedD. protected

3.A. particularB. deliciousC. nutritiousD. special

4.A. think aboutB. worry aboutC. adapt toD. appeal to

5.A. absentB. lateC. satisfiedD. willing

6.A. BeforeB. SinceC. AsD. After

7.A. ledB. refusedC. decidedD. afforded

8.A. so thatB. now thatC. as long asD. even though

9.A. quicklyB. hardlyC. graduallyD. suddenly

10.A. overB. throughC. acrossD. beyond

11.A. harderB. softerC. heavierD. deeper

12.A. flowersB. fruitsC. seedsD. vegetables

13.A. at riskB. with careC. in excitementD. like crazy

14.A. tastedB. sensedC. watchedD. smelt

15.A. tearB. cloudC. sunshineD. wind

16.A. cookedB. offeredC. providedD. supplied

17.A. rather thanB. other thanC. no more thanD. more than

18.A. factB. forceC. doubtD. willpower

19.A. receivedB. acceptedC. spentD. fulfilled

20.A. wayB. qualityC. goalD. standard

Recently, scientists are reported to have grown a living human “brain”. The team at Aston University in UK created tiny bunch of cells which act like a mini nervous system.

They believe it could help find a cure for worse mental conditions like Parkinson’s disease. Professor Michael Coleman is leading the research program. He explained, “We are aiming to be able to study the human brain at the most basic level, using an actual living human cell system. Cells have to be alive and operating efficiently to enable us to really understand how the brain works.” The experiment involves changing cells from a cancer tumor (肿瘤)and making them behave like brain cells.

Although far from finished, researchers hope the false brain cells will give them a greater understanding of how real brains work. This, in turn, could significantly further research into conditions which affect the brain. Neil Hunt, chief leader of the research group, said, “It is still very early days, but in the future the research could lead to a useful tool for looking into dementia (痴呆).”

The technique could also provide a way to carry on animal test and is being supported by the Humane Research Trust (HRT). The scientists predict that over the next ten years a million people will develop dementia. Professor Coleman believes their findings could change this. He said, “We hope our research will provide scientists with a new and highly relational human experimental model to help them understand the brain better and develop new drugs to control the related disease. However, the biggest challenge at present is that we are greatly short of fund, which will slow our research.”

1.UK scientists grow a living human “brain” in order to ______.

A. separate cells from a cancer tumor

B. discover how human brain really works

C. make use of living human cell system

D. study the structure of human brain

2.According to Neil Hunt, research into brain cells ______.

A. will help treat some diseases in nerve system

B. will influence the brain growth in many ways

C. will get finished as early as possible

D. will make people discover dementia

3.From the last paragraph, we can know that ______

A. the technique provided by HRT is not fully developed

B. the research program lacks financial support

C. animal tests are no longer allowed by law

D. a million people suffer from brain diseases

4.The text is meant to ______.

A. tell us about an important achievement in medical research

B. introduce the progress of drugs for dementia

C. tell us about health problem in nerve system

D. introduce a research program in human's brain

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