The third preparatory（预备的） meeting for the Shenzhen First Session International Hydrogen and Fuel Cell（燃料电池） Leaders Summit was held on November 28 in Shenzhen, Guangdong Province. Nearly 100 experts attended it. The theme of the meeting was “Energy revolution（革命）, hydrogen (氢) changes the world”.
The meeting focused on the use and safety of hydrogen. In the meeting, experts discussed the direction of developing the hydrogen industry in China, the basic research of hydrogen, the development of hydrogen fuel cell technology, the new way to develop hydrogen and fuel cells in Shenzhen and so on.
Hydrogen is secondly energy. And it’s produced by primary energy (一次能源). For example, if we use some energy to produce electricity, then we can use the electricity to produce hydrogen. Hydrogen fuel cells have a few advantages. Firstly, they take only a few minutes to recharge(充电）. Secondly, they aren’t affected by temperature. Thirdly, hydrogen is very safe, safer than gasoline. At present, because of climate change, the world is developing this energy. It doesn’t contain carbon. Many countries have made a plan for hydrogen. Japan, Germany and the US are the leading ones. China has used different policies to encourage the development of hydrogen since 2016. It will become a kind of very important energy like electricity in the future.
Yu Yiping, chairman of the board of directors at Scientific Valley Group, said, “In order to prepare the summit, we’ve done lots of work. We went to other countries, such as Germany, France and the US, to learn experience. We also went to California, the US to learn about the hydrogen production, storage and transportation, and the construction of hydrogen refueling(补给燃料） stations.” Du Zheng, vice director of the Nanshan District Science, Technology and Innovation Bureau, said, “We are pushing forward the development of hydrogen in three ways: the planning of the hydrogen industry, the policy guidance and the building of some basic facilities, such as hydrogen refueling stations.”
1.What does Paragraph 2 mainly show us?
A.Who attended the meeting. B.How long the meeting lasted.
C.The topics discussed in the meeting. D.The decisions made in the meeting.
2.Why is hydrogen secondary energy?
A.Because it is very safe.
B.Because it is clean energy.
C.Because it was developed not long ago.
D.Because it can be made from primary energy.
3.How many advantages of hydrogen fuel cells are mentioned in Paragraph 3?
A.Two. B.Three. C.Four. D.Five.
4.Which of the following is TRUE?
A.Hydrogen has been widely used in people’s life in China.
B.The members of Scientific Valley Group once went to England for study.
C.The development of hydrogen will be pushed in four ways.
D.The Chinese government strongly supports the development of hydrogen.
We all know that zebras have stripes (条纹). However, both animal experts and zebra fans all over the world haven’t known the reason for centuries. But now it appears that some researchers in California may have finally solved the age-old mystery!
In order to find the reason why zebras have stripes, a team of scientists led by Professor Tim Caro set to work. They began by comparing the thickness, location, and the stripes on seven species of zebras that live in various geographic locations. They then examined some factors that may continuously affect zebras, such as their natural enemies, the temperatures of their living places and the small insects around them like flies. To their amazement, the only factor that was linked with the stripes was the annoying flies. The zebras with the most obvious and the largest number of stripes mostly live in areas with more flies.
But that led to another question: why are zebras the only kind of animal smart enough to develop the stripes? After all, there are plenty of other animals like horses and donkeys, which are facing the same trouble. Upon closer examination of the black and white animals, the researchers noticed that unlike the others, zebras have very short coats of hair, making them particularly easy to be bitten (咬) by the flies!
While Tim says that this mystery is finally solved, it has given rise to a new one. Why are these fearless flies that have no fears of attacking animals that are thousands of times bigger, afraid of black and white stripes? If you have any answer, be sure to add it to the comments below. It may help the professor with his new research!
1.What does the underlined phrase in Paragraph 2 mean ________?
A.was connected with B.was different from
C.was similar to D.was harmful to
2.Why are zebras easy to be bitten?
A.They have very short coats of hair. B.They have a special smell.
C.They are very tall and strong. D.They live in dangerous places.
3.What will Tim study next?
A.Why flies like attacking zebras.
B.Why flies don’t attack horses or donkeys.
C.Why flies like attacking bigger animals.
D.Why flies are frightened of black and white stripes.
4.What does the passage mainly talk about?
A.The living habits of zebras. B.How zebras deal with flies.
C.Why zebras have stripes D.People’s comments on zebras.
For the most part of my life, I have lived in a small town in northern Arizona. As I got older, it seemed as if my town got smaller.
All things I could see in the town were bad. It looked ugly, small and was filled with terrible people. I wanted to be in new places with bigger chances and to meet new people. That was exactly what I did. I moved to the city of Phoenix to go to college and worked hard to achieve what I had dreamed of.
For the first year when I was away from home, I wanted to stay away and never go back. When people were taking a trip to my hometown, I would always question “Why would you like to do that? It’s so ugly.” All I had towards my hometown was negative feelings.
However, after being away for about three years, my perspective has completely changed. I have nothing but love for my hometown — its beauty, and the sentimental value (感情价值) that it holds.
After all, it’s where I’m from. Yes, there are bad things, but there are also some good ones: Dad raced the train on the way to school; Mum let us stop for ice cream every Friday after school to celebrate the end of the week; I walked around downtown with friends in high school, thinking we were cool.
It might take being away from something for you to truly appreciate it. It’s true when people say that distance makes the heart grow fonder(温柔的）. Now I visit my hometown every chance I get. Even if I am no longer living there, it will always hold a piece of my heart.
1.The writer probably thought his hometown was________from the first three paragraphs.
A.an attractive place for tourists B.filled with friendly people
C.the best place to live in D.a hateful place
2.What does the underlined word “perspective” in Paragraph 4 probably mean?
A.Dream. B.Opinion. C.Imagination. D.Habit
3.What’s Paragraph 5 mainly about?
A.How the writer missed his parents.
B.The writer’s sweet memories of his hometown.
C.Unhappy things that happened in the writer’s hometown.
D.Why the writer lost touch with his friends.
4.What does the last paragraph show?
A.People shouldn’t love their hometown for long.
B.People should leave their hometown.
C.The writer starts loving and valuing his hometown.
D.The writer won’t go back to his hometown.
Have you ever heard “You never get a second chance to make a first impression”? It may sound like an unusual piece of advice, but it is_______. The first impression someone has of you when meeting you for the first time will_______influence how that person treats you in the future. What is even more interesting is that the brain takes in all the_______to create that first impression in about three seconds. When you meet someone for the first time, by the time you have stated your name, the other person has already _______an opinion about the kind of person you are.
So how do you make a good first impression? All things grown-ups tell you such as being polite and being well-dressed are very_______. However, the most important tool for making a good first impression is your_________. Smiling, being responsive（响应的）, and looking like you are happy will always leave a _______ impression on people, especially those who don’t know you. Most people, generally speaking, are ready to_______ back when they are smiled at.
Furthermore, smiling and being in a positive mood help you to know and_______new things better. This means that you can possibly be friendlier to people you don’t know and be more creative and able to solve problems more quickly. So if you ever need a________ to be happy, think about the wonderful people you might meet and impress them with a cheerful smile.
1.A.simple B.true C.impossible
2.A.probably B.carelessly C.wisely
3.A.permission B.success C.information
4.A.improved B.refused C.formed
5.A.educational B.important C.different
6.A.arms B.hands C.face
7.A.terrible B.positive C.difficult
8.A.smile B.cry C.shout
9.A.forget B.understand C.celebrate
10.A.mistake B.discovery C.reason
—Did you stay at home________last night?
—Yes. My sister went to see fireworks with my parents.
A.in fact B.on duty C.by yourself
—Why are there so many plants in your flat?
—I want them to________harmful gases because I just bought some new furniture.
A.take over B.take in C.take up
