People have always been ________ about exactly how life on earth began.
A. curious B. excited
C. anxious D. careful
When I reached front door, I suddenly saw strange sight last night.
A. the; 不填 B. a; the
C. 不填; a D. the; a
高三年级是高中生活的最后一年， 这一年中，学生们面临着沉重的升学压力。因此，很多学生课间也坐教室里用功，但学习效率和成绩并不理想。由此你想告诉他们：适当的休息很有必要。现在就请你以“A Ten-minute Break”为题，按下列要点写一篇短文，让这些同学从中有所启发。要点如下：
十分钟的课间休息很有必要。 2．要注意适当的休息方式。 3．你是怎样利用这十分钟的。 注意：词数120左右。
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 the1.________smart？
Previous 2._________ | The brain no longer makes new neural connections once the 3.________ of one’s body has stopped. |
New 4. ________
| ●New neurons continue to occur even in one’s old age. ●5.________contributes to the development of the new parts of your brain. ●Many products which claim to improve your brain function appear in the 6._________. |
7._________ | ●Keep yourself away from 8._________blood pressure. ●9._________in more vitamins for the needs of your brain. ●10.________your brain as much as you can. |
Christian Eijkman, a Dutch doctor, left the Netherlands for the island of Java. Many people on the island had a disease called beri-beri. He was going there to try and find a cure.
At first, Eijkman thought some kind of germ (细菌) caused beri-beri. He raised some chickens. He didn’t eat them, but made experiments on them. The local people were quite surprised at that. One day he noticed that his chickens became sick when they were fed the food most Javanese ate — refined white rice (精炼米). When he fed them with unrefined rice, also known as brown rice, they recovered. Eijkman realized that he had made an important discovery — that some things in food could prevent disease. These things were named vitamins. The Javanese were not getting enough vitamins because they had actually removed the part that contains vitamins. Later, other diseases were also found to be caused by the lack of vitamins in a person’s food.
Today many people know the importance of vitamins and they make sure they have enough vitamins from the food they eat. If they don’t, they can also take vitamin pills.
1. Christian Eijkman went to the island of Java to ______.
A. help the Javanese with their illness
B. find ways to grow better crops
C. do some research about the island
D. spend his holiday
2. Why did Christian Eijkman raise some chickens?
A. To eat them.
B. To make money by selling them.
C. To give the Javanese a surprise.
D. To carry out his experiments.
3. If a person doesn’t get enough vitamins in his diet, he’d better ______.
A. eat more rice B. eat vitamin pills
C. eat some chicken D. eat more meat
4. We can learn from the passage that ______.
A. Christian Eijkman’s experiment was successful
B. the Javanese didn’t like vitamins
C. beri-beri was caused by chickens
D. the Javanese’s disease was caused by a kind of germ
You can't always predict a heavy rain or remember your umbrella. But designer Mikhail Belyaev doesn't think that forgetting to check the weather forecast before heading out should result in you getting wet. That's why he created Lampbrella, a lamp post with its own rain－sensing umbrella.
The designer says he came up with the idea after watching people get wet on streets in Russia. “Once, I was driving on a central Saint Petersburg street and saw the street lamps lighting up people trying to hide from the rain. I thought it would be appropriate to have a canopy(伞篷)built into a street lamp，” he said.
The Lampbrella is a standard－looking street lamp fitted with an umbrella canopy. It has a built－in electric motor which can open or close the umbrella on demand. Sensors(传感器)then ensure that the umbrella offers pedestrians(行人)shelter whenever it starts raining.
In addition to the rain sensor, there's also a 360° motion sensor on the fiberglass street lamp which detects whether anyone is using the Lampbrella.After three minutes of not being used the canopy is closed.
According to the designer, the Lampbrella would move at a relatively low speed, so as not to cause harm to the pedestrians. Besides, it would be grounded to protect from possible lightning strike. Each Lampbrella would offer enough shelter for several people. Being installed(安装) at 2 meters off the ground, it would only be a danger for the tallest of pedestrians.
While there are no plans to take the Lampbrella into production, Belyaev says he recently introduced his creation to one Moscow Department, and insists his creation could be installed on any street where a lot of people walk but there are no canopies to provide shelter.
1. For what purpose did Belyaev create the Lampbrella?
A. To protect people from the rain.
B. To predict a heavy rain.
C. To check the weather forecast.
D. To remind people to take an umbrella.
2.What do we know from Belyaev's words in Paragraph 2?
A. It rains a lot in the city of Saint Petersburg.
B. His creation was inspired by an experience.
C. Street lamps are protected by canopies.
D. He enjoyed taking walks in the rain.
3.What does Paragraph 5 mainly tell us about the Lampbrella?
A. Its moving speed. B. Its appearance.
C. Its safety. D. Its installation.
4.What can be inferred from the last paragraph?
A. The designer will open a company to promote his product.
B. The Lampbrella could be put into immediate production.
C. The designer is confident that his creation is practical.
D. The Lampbrella would be put on show in Moscow.
