1 . Bricks are one of the oldest known building materials, dating back thousands of years. But researchers at Washington University in St. Louis have found a new use for bricks: as energy storage units. A team of engineers and chemists have found a way to transform an ordinary house brick into a pseudo-battery — allowing it to conduct and store electricity. The bricks are powerful enough to illuminate（点亮）an LED light bulb and cost only about $ 3 to make.
“I love the idea of adding value to things that are inexpensive, things that are affordable, things that we kind of take for granted, ”said Julio D’Arcy, an assistant professor of chemistry at Washington University and one of the researchers on this project.
The brick battery relies on the reddish pigment（色素）known as iron oxide, or rust, that gives red bricks their color. The scientists pumped the bricks with several gases that react with iron oxide to produce a network of plastic fibers. These microscopic fibers coat the empty spaces inside the bricks — and conduct electricity.
“What we’re trying to do is: we’re trying to make specialized plastics that are only used on the nano（纳米）scale — where we use very little of the plastic, and we can actually insert that plastic inside construction materials. ” The study is in the journal Nature Communications.
In the future, D’Arcy says, a brick wall could potentially serve a double purpose: providing structural support and storing electricity generated from renewable energy sources, such as solar panels.
The technology is still at least a few years away from being ready for the commercial market. And right now the energy storage capacity of the bricks is still pretty low — about 1 percent of a lithium battery. But the team is now testing ways to improve brick performance — because it looks like you can teach an old brick new tricks.
1. What appeals to Julio D’Arcy listing bricks as their subjects?| A．Their low expense. | B．Their common existence. |
| C．Their additional value. | D．Their internal composition. |
| A．Pump the brick with gases. |
| B．Color the brick red. |
| C．Produce microscopic fibers. |
| D．Cover its inner vacancy with microscopic fibers. |
| A．Construction materials possessing low energy storage capacity. |
| B．Construction materials generating renewable energy resources. |
| C．Construction materials used for electricity storage. |
| D．Construction materials with built-in common plastic. |
| A．Skeptical. | B．Objective. |
| C．Conservative. | D．Controversial. |
2 . When I was young at school, I loved to talk, which was not appreciated by Miss Jordan, my tenth-grade English teacher.
She wasn't a popular teacher because she was not good-looking and was so strict. Whenever she got upset, she would lower her head and look at you over the top of her glasses.
One day in her class, while I was busy talking, I didn't realize that she had stopped teaching. She stared straight at me. “Young lady, I would like to see you after school.”
For punishment she told me to write a thousand-word essay on education and it must be handed in by the following Wednesday. Well, that day came. I wasn't worried. It was a good paper. And I expected praise from her. The next day, however, she called me forward, looking at me over her glasses, and returned my paper. "Go back and rewrite. Remember, each paragraph must have a topic sentence." Then came the second time, the grammar. The third time, the spelling. The fourth time, the punctuation. The fifth, it wasn't neat enough. I was sick.
The sixth time, I rewrote the whole paper slowly, in ink, leaving generous space. Seeing it, she removed her glasses and smiled. She finally accepted the paper. After that, I put the whole thing out of my mind.
Two or three months passed, one day Miss Jordan said to us, “Class, do you still remember an essay contest held citywide? They have announced the winners. Yes, Mary has won the first prize."
I was amazed! It was the first time I had won a prize. Years later, I told a reporter the story and expressed my great thanks to Miss Jordan. Soon after that, I got a letter from Miss Jordan, and it said, "What I did wasn't that important. What mattered was the lesson you had learnt. When you wrote and rewrote that paper for me, you began to learn how to discipline yourself.”
1. What made Miss Jordan unhappy with the author?| A．She often lowered her head in class. | B．She always talked too much in class. |
| C．She often made her classmates upset. | D．She often laughed at Miss Jordan's glasses. |
①Grammar. ②Punctuation. ③Topic sentence. ④Spelling. ⑤Neatness.
| A．③②①⑤④ | B．③①⑤②④ | C．③①④②⑤ | D．③⑤④②① |
| A．Active and open-minded. | B．Honest but cold-blooded. |
| C．Energetic and kind-hearted. | D．Strict but broad-minded. |
| A．A naughty girl | B．A good lesson in life |
| C．An essay contest | D．A terrible memory in mind |
| A．No pains, no gains. | B．Love me, love my dog. |
| C．All roads lead to Rome. | D．Two heads are better than one. |
3 . Yellowstone National Park became America’s first national park in 1872.The National Park Service was formed 44 years later. Yellowstone, which is mostly in the state of Wyoming, is considered as a great example of the National Park System. Humans have been present in Yellowstone for more than 11,000 years.
The first organized exploration of the area which lies close to the Continental Divide of North America took place in 1870.Those first organized explorers must have seen right away how special the land was. Yellowstone contains beautiful mountains, deep canyons, lakes and rivers.
The name Yellowstone comes from the river running through the area. At first known as Rock Yellow River, later it became known as the Yellowstone River. Yellowstone is home to many different species of plants. However, the park is most special because of what lies underneath it. It sits on top of an ancient super volcano. And it remains an active volcano. It is believed that the last time the volcano erupted was a half million years ago. The area has had three major eruptions in the last three million years. Experts say it may erupt again in another 1,000 to 10,000 years. But each year, there are thousands of earthquakes at Yellowstone. Most are too small to be felt by people visiting the park.
Yellowstone is filled with the beauty of many hot water springs. Of all the geothermal(地热的)places in the world, half are in Yellowstone. In places of geothermal activity, hot water and gases are trapped under the earth’s crust. In places like Yellowstone, they rush to the surface in the form of hot water and steam to form geysers(喷泉).There are more geysers and hot springs in Yellowstone than anywhere else on Earth. The most famous geyser is Old Faithful. It erupts about every hour or hour and a half. The eruption can last from one and a half minutes up to 5 minutes. The amount of hot water it pours in that time can be as much as 31,000 liters or more.
1. Which shows the correct time order according to the text?a. Explorers organized the first exploration of Yellowstone.
b. The National Park Service was formed.
c. The park became the first national park in America.
d. Humans showed up in Yellowstone.
| A．a,d,c,b | B．d,c,b,a |
| C．d,a,c,b | D．d,a,b,c |
| A．The beautiful mountains and deep canyons. |
| B．The different species of plants. |
| C．The ancient active volcano. |
| D．The lakes and rivers. |
| A．It is the largest geyser in Yellowstone. |
| B．It may erupt over twenty times every 24 hours. |
| C．It can be easily affected by active volcanoes. |
| D．It pours over 31,000 liters of hot water every minute. |
| A．Yellowstone lies in the state of Wyoming. |
| B．Rock Yellow River is near the Yellowstone River. |
| C．Yellowstone has the most famous plants in the world. |
| D．Yellowstone National Park is successful in National Park System. |
