题目内容
Tips for developing an exercise plan for your brain
You know that eating a sensible diet and getting plenty of exercise help your body healthy and strong. But did you know that there are ways to make your brain healthier and smarter?
Studies show that when the brain is compelled to do something new, it creates new neural pathways（神经通路）. The more pathways you have, the faster you can think and the better memory you will have.
Ten steps toward a smarter brain
Limit your TV time
Watching an average TV show requires very little brain power and brings the same result as neglecting physical exercise. Your brain will become weak just as your muscles do. If you watch TV, choose something educational and informative.
Travel
Traveling to a new country forces you to see and do things in a new way, providing stimulation（刺激） to the brain.
Learn a new language
Acquiring a new language involves different learning methods. Learning a language sharpens your brain and helps prevent memory problems in later years.
Master a new subject
Each week, select an animal, a bird or a fish, and read everything you can about it. Stretch （最大限度利用）your brain as you become an expert on the subject.
Use your non-dominant hand
If you are right-handed, use your left hand for everyday activities, or use your right hand if you are left-handed. Doing familiar things in a new way will cause your brain to create new neural networks.
Read often
As you read, take the time to look up people or places that aren’t familiar. Reading expands your vocabulary if you search for words and definitions that you don’t know.
Do puzzles
According to the Mayo Clinic, doing sudoku and crossword puzzles keeps the brain sharp into your senior years.
Calculate while you shop
As you put things in your grocery cart, total everything in your head. See how much close you get to the actual total.
Play video games
Studies have found that certain video games force you to use critical decision-making skills and can even improve students’ math scores.
Tweet!（推特，类似中国的微信）
Read messages from people who represent a wide range of interests. And some say that learning to express yourself in just 140 characters is a great brain challenge!
So get in the habit of challenging your brain, and make yourself smarter!
56. What’s the main idea of the passage?
A. Get in the habit of learning something new
B. Develop an exercise plan
C. Make Your Brain Smarter
D. Tips to make yourself healthier
57. What does the underlined word “compelled” mean?
A. requested B. allowed C. completed D. forced
58. What can we learn from the passage?
A. Educational and informative TV shows are helpful to limit your TV time.
B. Doing sudoku and crossword puzzles may make you confused.
C. Playing certain video games may help you sharpen your mind.
D. Writing short messages often can also make you healthier .
CDC
Following some of the tips for green living helps save our planet. All of these involve just a few changes to our daily habits.
Just walk and limit the use of your car. One of the poster images of pollution is our vehicles. It burns fuel. It is not as efficient as we hope it could be, and we use it every single day. To lessen the effects of the air pollution caused by our vehicles, we should limit their use. If we can walk to our destination then just let us go. Not only do we lessen our carbon dioxide emissions, but we also get a good exercise out of it.
Use a laptop instead of a computer desktop. Laptops are more energy efficient compared to their bigger counterparts. A laptop is generally 50 percent more efficient in using electricity. Aside from that there are other benefits of a laptop. It is portable so you can work anywhere you like and that you get powerful features without the large size of desktop units.
Turn off the faucet while you are brushing your teeth. It is always a better idea to use a glass when we are brushing our teeth and not to just let the faucet keep on running. Therefore，there is less water to waste while we are cleaning our pearly whites. Simply turn off the faucet when you are not using it.
Make good use of natural light. We have a great and natural lamp --- the sun, and we should learn how to take full advantage of it during daytime. So instead of turning on our lights or lamps even if it is still not evening, we should pull up the drapes and let the natural light come in from the windows.
These are just some of the best tips for green living, but of course there are still many of these tips if you just search for them. But you can do your own variation any time just always prioritize how you can use less energy and produce even lesser trash and pollution.
【小题1】What’s the best title for the passage?
| A．How to Save Our Planet |
| B．How to Change Our Daily Habits |
| C．Tips for Green Living Today |
| D．Green Living and Serious Pollution |
| A．less energy efficient | B．faster at work | C．easy to repair | D．easy to carry |
| A．Three | B．Four | C．Five | D．Six |
| A．decrease | B．consider | C．imagine | D．guess |
| A．A few changes to daily habits can help a lot. |
| B．While washing teeth we should turn off the faucet. |
| C．Vehicles bring pollution and we should try to avoid. |
| D．In the daytime we should not pull up the drapes. |
ABCD请按实际情况填写。其他请参照下表填写。
A, B, C, D, E(AB), F(AC)
| A. Control of Respiration B. Basic tips for preserving cut flowers C. Role of Respiration D. Most Important Aspect of Flower Care E. Need for Clean Water F. Ways of Stopping Respiration |
While everybody enjoys fresh cut flowers around his house, few people know how to keep them for as long as possible. This may be done by keeping in mind a few simple facts. The key to keeping fresh cut flowers for a week or more without floral preservatives(which contain biocides that kill bacteria and fungus) is to keep the water fresh and the stems free of air pockets so they can continue to draw up water.
【小题2】
An important thing to remember about cut flowers is that they are sensitive to temperature. For example, studies have shown that cut carnations(康乃馨) retain their freshness eight times longer when kept at 12℃ than when kept at 26℃. Keeping freshly harvested flowers at the right temperatures is probably the most important aspect of flower care.
【小题3】
Flowers are not intended by nature to live very long. Their biological purpose is simply to attract birds or insects, such as bees, for pollination (授粉). After that, they quickly dry up and die. The process by which flowers consume oxygen and produce carbon dioxide, called respiration (呼吸), generates the energy the flower needs to give the flower its shape and colour. The making of seeds also depends on this energy. While all living things respire, flowers have a high level of respiration. A result of all this respiration is heat, and for flowers the level of heat relative to the mass of the flower is very high. Respiration also brings about the eventual death of the flower. Thus the greater the level of respiration, the sooner the flower dies.
【小题4】
How, then, to control the rate at which flowers die? By controlling respiration. How is respiration controlled? By controlling temperature. We know that respiration produces heat, but the reverse is also true. Thus by maintaining low temperatures, respiration is reduced and the cut flower will age more slowly.
【小题5】
Another vital factor in keeping cut flowers is the quality of the water in which they are placed. Flowers find it difficult to “drink” water that is dirty or otherwise polluted. Even when water looks and smells clean, it almost certainly contains harmful substances that can endanger the flowers. To rid the water of these unwanted substances, household chlorine bleach (含氯漂白剂) can be used in small quantities. It is recommended that 15 drops of chlorine bleach(at 4% solution) be added to each litre of water. The water and solution should also be replaced each day.
Driving in Canada is similar to driving in many parts of the United States. Distances and speeds, however, are posted in kilometers per hour and some signs, particularly in Quebec, may only be in French.
Unless otherwise posted, the maximum (最大限度的) speed limit in Canada is 50km/hr in cities and 80km/hr on highways. On rural highways, the posted speed limit may be 100km/hr. It is not allowed to take automobile radar detectors (汽车雷达检测器) into Quebec, Ontario, Manitoba, and the Yukon. Seat belt use is required by law for all passengers, and child car seats must be used by children under 40 pounds. Some provinces require drivers to keep their vehicles’ headlights on during the day and some have banned (禁止) driving while using a hand-held cell phone. Motorcycles cannot share a lane (车道), and safety helmets for motorcycle riders and passengers are necessary. Running a red light is a serious crime throughout Canada and drivers are advised to stop before starting when a light turns green.
Winter travel can be dangerous due to heavy snowfalls and icy conditions. Some roads and bridges are often closed in winter. Snow tires are required in some provinces. Travelers should also be careful about animals while driving at night in rural areas.
Highway 401, from Detroit to Montreal, is one of the busiest highways in North America. It has been the scene of many deadly traffic accidents due to sudden and severe weather changes, high rates of speed, and heavy truck traffic. Thus drivers should be alert while travelling here.
Please refer to our Road Safety page for more information and tips . Also, we suggest that you visit the website of Canada’s national authority responsible for road safety.
【小题1】Which of the following is TRUE according to the text?
| A．All signs on the roads in Quebec are in English. |
| B．Automobile radar detectors are allowed to be used in Manitoba. |
| C．Passengers may choose not to wear seat belts while in a car in Canada. |
| D．The speed of cars in Canadian cities should be less than 50km/hr. |
| A．Bad weather | B．Drunk driving | C．High speed | D．Heavy traffic |
| A．careful | B．relaxed | C．nervous | D．pleased |
| A．Different traffic rules in Canada . |
| B．Tips for traveling by car in Canada . |
| C．Special rules for driving in Canada . |
| D．Traffic safety and road conditions in Canada . |
| A．drivers in Canada | B．Drivers in America |
| C．Traffic police in Canada | D．Traffic police in America |