2 . Americans spend billions on vitamins, multivitamins for their health, but a review of numerous studies concluded there is little to no evidence that some of those vitamins prevent heart disease, cancer or death.

The report, released by the U.S. Preventive Services Task Force last week, concluded that “recent evidence is not enough” to determine whether vitamins actually help or hurt your health, based on 84 studies, 52 of which were done since 2014. Vitamins examined included vitamins A, B, C, D and E, as well as other multivitamins.

“Our suggestion is neither for nor against taking vitamins, or combinations of those nutrients (营养物质). We just don’t have enough evidence,” said Dr. John Wong, a doctor in the Department of Medicine at Tufts Medical Center who was involved in the report.

While the finding is that vitamins don’t have any benefits to “healthy, non-pregnant (未怀孕) adults”, it doesn’t apply to “children, people who are pregnant or may become pregnant, or people who are hospitalized.”

The Task Force admitted it makes sense that people would take vitamins in hopes of health benefits, as some shortage may lead to illness. But experts agreed the best way to get good health and prevent cancer is a balanced diet and regular physical activity.

“The suggestion across all organizations about vitamins is to eat a balanced diet, and then the key tends to be on plenty of fruit and vegetables and less junk foods,” Wong said.

Wong added people should refer to their health doctors to determine if any vitamins are worth taking. He said this suggestion should also serve as a need to further research into proving the official benefits and risks for each vitamin.

1. Why can’t we say whether vitamins really benefit or harm health?

A．Because they really have no benefit.

B．Because many studies have proved it.

C．Because evidence is not enough at present.

D．Because Dr. John Wong wasn’t involved in the research.

2. Which of the following is TRUE according to the text?

A．Vitamins are of no benefit to anyone.

B．Vitamins are beneficial to healthy adults.

C．Children can’t take vitamins though they are in hospital.

D．People could take vitamins if lack of vitamin may tend to illness.

3. Which is the best way to avoid cancer according to the Task Force?

A．Taking enough vitamins.

B．Eating more packaged foods.

C．Following their health doctor’s advice.

D．Having a balanced diet and doing exercise.

4. Which can be suitable title for the text?

A．Taking Vitamins: No Benefit to People

B．Doctor’s Advice on Buying Vitamins

C．Taking Vitamins: Likely to Waste Money

D．Americans Spending More Money on Vitamins

3 . Steph Clemence always intended to go to college. But life has a(an) _________ throughout her early childhood years to _________ barriers. Growing up, she led a nomadic (漫游的) life because her mother, who remarried several times, was always on the _________. By the time of high school, Steph had lived in 25 places.

When her stepfather died in a car accident, leaving her mother to support three daughters on a(an) _________ income, paying for college became a serious question. But she still tried to figure out what to do with a life so _________ her plan for schooling.

The _________ came one afternoon when she was cleaning her bedroom. She _________ a thick document where she found a handout titled “Mrs. Clark’s Book List” by her high school English teacher Dorothy Clark.

It wasn’t homework, but it could be a(an) _________ for those not able to receive higher education due to _________ problems like her. The teacher had spent months creating a list of 153 books whose contents would be as __________ as a two-year study at an arts college.

Steph studied the list. Each of those books __________ her to learn more. The reading list was also a(an) __________ in her everyday life, even __________ with her on vacations to find out the next book. She never did get to college, but has now only four books left before __________ the list. She wishes she could thank Mrs. Clark for how reading the __________ on the list has changed her life.

1.

A．efficiency

B．motivation

C．exception

D．tendency

2.

A．hold back

B．set up

C．give away

D．carry on

3.

A．display

B．move

C．threat

D．mission

4.

A．precise

B．independent

C．modest

D．initial

5.

A．breaking away from

B．taking hold of

C．giving in to

D．going in for

6.

A．situation

B．answer

C．procedure

D．emergency

7.

A．spotted

B．folded

C．loaded

D．assigned

8.

A．hard rock

B．far cry

C．field work

D．road map

9.

A．flexible

B．foundational

C．financial

D．temporary

10.

A．qualified

B．reliable

C．sufficient

D．delightful

11.

A．confirmed

B．sharpened

C．stimulated

D．bounced

12.

A．origin

B．treat

C．concept

D．constant

13.

A．discussing

B．traveling

C．whispering

D．flashing

14.

A．completing

B．forecasting

C．revealing

D．declaring

15.

A．remarks

B．works

C．proofs

D．zones

4 . Technology is likely to play a big part in reaching its climate goals in the future.

Fusion is the process that fires the sun. But some experts say it could someday power our homes. Fusion happens when the nuclei (核) of two atoms are subjected to extreme heat. This leads to the formation of a new larger atom and large amounts of energy. One problem is the process itself requires a large amount of energy. Developers of the technology haven’t yet performed a fusion reaction that releases more energy than it requires. In addition, running an electric power plant of fusion would require the resulting heat to be contained in an economical way.

Advanced nuclear plants would be smaller than today’s massive nuclear reactors. Experts say they could be used in rural areas and could take over for wind and solar power when the sun goes down or the wind dies. But advanced nuclear reactors are difficult and costly to build. Critics say they would also create more waste. And they would run on uranium (铀), which could make some advanced reactors more appealing to militants (激进分子) seeking materials to make weapons.

Currently, there are 15 direct air capture plants operating worldwide, getting CO directly from the air and puts the gas underground. The costs are currently high. But supporters say those costs will fall as the technology improves. They also say tax breaks for businesses could help the technology. But critics say offering large credits could actually lead to more plants continuing to burn fossil fuels.

Hydrogen (氢) can be mixed with natural gas to make a cleaner-burning fuel. This could power a fuel cell vehicle. Such a vehicle would release environmentally friendly water vapors.

So-called clean hydrogen can be produced using energy methods such as wind and solar. But those methods are more costly than “grey hydrogen”, which is made with fossil fuels. Geothermal power plants capture heat up to 370 degrees Celsius far below the earth’s surface. The heat creates steam that can turn turbines (涡轮机) to produce electricity. But the technology would need to greatly expand to become a major alternative to fossil fuels.

1. How does the author develop the passage？

A．By analyzing the cost.

B．By introducing the values.

C．By weighing the positive and negative.

D．By following the order of great importance.

2. What can we learn from the text？

A．Carbon Capture is in the theoretical stage.

B．Nuclear fusion has been widely used in families.

C．Grey hydrogen belongs to environmental protection energy

D．The advanced nuclear plants have hidden dangers of making weapons.

3. What technology is suitable for countries having the heat in the interior(内部)of the earth？

A．Geothermal power.	B．Carbon Capture.
C．Advanced Nuclear.	D．Fusion and Hydrogen.

4. What is the best title for the text？

A．New Issues Facing Climate Goals

B．Develop New Energy According to Local Conditions

C．What Are the Future Development Goals of Clean Energy？

D．Which Technologies Could Help the World Reach Its Climate Goals？

6 . 阅读下面材料，根据其内容和所给段落开头语续写两段，使之构成一篇完整的短文。

One of my most memorable trips took place during the summer vacation about three years ago, when my sister, my aunt and I took a trip to Spain because we were moving. On the day of the trip, I lay in bed thinking about my friends whom I was going to leave behind and thoughts were flooding in.

When we arrived at the hire station, we seemed to have some problems with our luggage because it was too much for a taxi, so we had to book a van (厢式送货车) to take our luggage to the airport. We waited for a long period to find a perfect van that would fit our luggage.

Before leaving, I felt very bad because I was going to a different country and was going to miss all my friends and family. I was not comfortable and cried.

The journey was almost perfect at the beginning, but soon it began to rain. Because of the rain, the drivers could not see far away, which caused a huge traffic jam. I was sitting by the window with a can of Coke that I had bought in the store earlier. My aunt and sister fell asleep, and during this time. I felt bored and thought about other things that bothered me. My eyes turned to the mountain in front of us.

A bus suddenly appeared in the picture. It was very close to us. Cars sped past us without any speed limit. Beside me was a very deep lake: I wondered to myself what if something or someone fell inside it. Suddenly, a bus in front of our van stopped, and because it was raining heavily and the van was going fast, no one could see what was going to happen. Then, bang, we bumped into each other. Our van overturned, but luckily, it didn’t fall into the lake. People came to help us get out of the van because we were blocked and the driver was half-dead.

注意：1.续写词数应为150左右；
2.续写部分分为两段，每段的开头语已为你写好。

We struggled to get out of the van and everything we had was gone.

_______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

I was losing a lot of blood and then the emergency aid came.

_______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

9 . LANZHOU-When an international olive oil competition announced its winners in Greece in late June, excitement spread across the village of Daoqi in Northwest China.

“The award-winning olive oil was made from our fruit,” said Ru Ciming, 50, an olive planter from the village under the city of Longnan, Gansu province. The variety of olive trees in Ru’s orchard (果园) was introduced from Spain. In the eyes of locals, the foreign trees have not only pulled the city, once among the least-developed regions in China, out of poverty, but they have also brought them international fame.

Olives originated in the Mediterranean (地中海地区) and their oil, often called liquid gold, is used widely in food, cosmetics and medicine. In the 1960s, the Albanian government gifted China more than 10,000 olive saplings (树苗), which were then planted in many parts of the country on nationwide trials. Longnan began to plant olive trees in the early 1970s and experts concluded that the region was ideal for the resettlement of the olive trees due to its climate and soil condition. After years of experiments and promotion, it is now the largest olive cultivation (栽培) base in China.

In recent years, the local olive oil industry has continued to expand as Longnan has improved cooperation with Mediterranean countries that have a long history of olive planting, including Italy, Greece and Spain. The improved cooperation aims to introduce better varieties and initiate technical exchanges.

Pedro J. Rodriguez Sanchez, a Spanish olive seedling expert, was one of the early contributors to olive exchanges. He arrived in Longnan in 2009, when only half of the local olive tree seedlings had survived. His technical guidance helped raise the survival rate to over 90 percent.

Zhao Haiyun, an official in charge of promoting the olive industry in Longnan’s Wudu District, said that many more European experts have arrived since Sanchez. They have visited orchards to offer guidance to farmers, and helped companies improve their processing and storage procedures.

They have helped the district, as well as the city of Longnan, to jump on the bandwagon of China’s rising demand for high-quality olive oil, especially among well-off urban families, said Zhao.

1. What can we learn from the third paragraph?

A．Olive oil is named liquid gold and has many uses.

B．The Albanian government sold some olive saplings to China.

C．Longnan has a history of about 30 years of planting olive trees.

D．Longnan is fit for the growth of olive trees due to its rich water resources.

2. Where did Pedro J. Rodriguez Sanchez come from?

A．Italy.

B．Albania.

C．Spain.

D．Greece.

3. Which of the following words can replace the underlined one “bandwagon” in the last paragraph?

A．Policy.

B．Habit.

C．Fashion.

D．Model.

4. What can be the best title for the news report?

A．Olives link Northwest China with world

B．Oliver trees pull Longnan out of poverty

C．Longnan is largest olive cultivation base in China

D．Longnan improves cooperation with Mediterranean countries