Like most kids,you probably don't spend much time worrying about heart disease. After all,hypertension tends to become more common as people reach middle age and older. But doc?tors say it's never too early to start thinking about your heart or about salt.

  Blood pressure has been going up over the past decade in children and teenagers in the United States and many European countries. And a kid with high blood pressure is more likely to become a grownup with hypertension.

  Cutting down on salt might help stop the cycle. In one recent study,researchers from the United Kingdom analyzed 10 trials involving nearly 1,000 kids. The trial results showed that lowering sodium intake by 40 to 50 percent led to a significant decrease in blood pressure,even in infants.

  Reducing salt might also help fight childhood obesity,a growing public health problem. British researchers recently found that kids who eat less salt also drink fewer sugary soft drinks. Drinking less soda makes kids less likely to gain weight,become obese and develop high blood pressure.

  And salt can affect more than just your heart and weight. A study published in October found that a growing number of kids in the U. S. are suffering from an illness called kidney stones. This painful condition used to mostly affect people in their40s and older. Now,kids as young as 5 are getting it.

  The kidneys are responsible for filtering salt out of the bloodstream. So researchers think that kids' eating too much salt and not drinking enough water are partly to blame for the trend.

(   ) 5. What's the main idea of the passage?

   A. Hypertension is the most popular disease among adults.

   B. People should reduce salt and sugary soft drinks.

   C. People should begin thinking about salt at present. .

   D. Salt will affect your heart and weight.

(   ) 6. If you want to lower the risk of getting heart attack,you'd better         .

   A. drink less and eat less every day if possible

   B. avoid eating too much salt but drink more soft drinks

   C. take regular examinations in the hospital

   D. reduce nearly half of the amount of the salt you take

(   ) 7. The whole text is developed by         .

   A. space   B. evidence   C. time   D. importance

(   ) 8. What may partly cause children to get kidney stones?

   A. Eating too much salt and drinking little water.

   B. Eating too much and doing little exercise.

   C. Sleeping too much and putting on weight.

   D. Taking in too much salt and fat.

 New technology comes to the aid of the disabled in many forms that will knock your socks off!

  A mobility robot is a robot that is designed to help disabled people move around. It might have wheels,but most often it will have legs so it can climb stairs and uneven ground. It might also take the form of a mobility suit,which is a kind of robot that surrounds your body,arms and legs. Here are some examples.

  Toyota Partner Robot This mobility robot can not only transport you around,you can also make it follow you around and use it to transport all the things you have bought when you are shopping. Even though it has wheels,it can still climb stairs since each wheel can move independently up and down.

  Twendy One The other amazing mobility robots in the top 10 can only help you move around. Twendy One is different. It can help you move around and help you do almost all your household chores. Thanks to Twendy One's ability to understand human instructions,it can help you toast bread,prepare your dinner and find all kinds of stuff for you.

  EL-E Fetch Bot The EL-E might not be a true mobility robot. It can't help you move around,but it can fetch things for you so you don't need to move anyway. All you need to do is to point a laser pointer at something and EL-E will race to get it for you. You can also point at another location to make EL-E move the item instead of giving it to you.  

  Bonus-BEAR Disabled people aren't the only ones who need to be transported around. Wounded soldiers might also need a lift back to base,so say hello to BEAR―Battlefield Extraction Assist Robot. The BEAR's two legs are designed so they can go anywhere a human can and the two arms can lift more than 250 pounds―enough to carry a wounded soldier.

(   ) 5. Toyota Partner Robot with wheels can still climb,that's because         .

   A. it can understand human instructions

   B. it is one of the top ten mobility robots

   C. its wheels can move up and down independently

   D. it is designed to have two long arms and legs

(   ) 6. What Twendy One is different from the other robots is         .

   A. to do housework   B. to fetch something

   C. to climb stairs   D. to move around

(   ) 7. According to the passage,which of the statements is NOT true?

   A. A mobility robot can give disabled people much more help.

   B. When EL-E Fetch Bot fetches for you,a laser device is needed.

   C. Bonus-BEAR can be used to lift and carry the heavy.

   D. The four robots can all help people transport around.

(   ) 8. What does the underlined part mean in Paragraph 1?

   A. Influence you a lot. B. Surprise you greatly.

   C. Protect you in many ways. D. Accompany you everywhere.

  It's time to be water efficient!

  As populations increase across Australia and the rest of the world,demand for water will also increase. If we don't reduce each individual's demand for water (both directly and through embodied water) ,the water situation will become dire.

  It is obvious that we cannot increase demands for water much more without detrimental (有害的) effects to the environment,society and the economy.

  It's all too easy to blame someone else for the water situation―"if 70% of water is used for agriculture then that's what we should target"―but it's not that easy. We all depend on the food and resources that agriculture provides,and while there are definitely opportunities to increase water efficiency on the farm,the solution will take more than that.

  We each share responsibility for the sustainable management of our water resources,which means using less water at home,in the workplace,at school,on holidays,on the farm... everyone,everywhere,every time.

  It's time to become water efficient!This involves reassessing our relationship with water,and learning to use it more sparingly. On the most basic level,it requires a behavioural change,and assigning a value to water that truly reflects its worth.

  We can also unlock economic benefits of being water efficient. There are many real world examples given in the case studies on this site.

  Everybody has a responsibility to save water,if future generations are to enjoy a similar standard of living to the one we enjoy now. In fact,many of the impacts associated with water use are likely to have an effect on our own lives!

  Www. savewater. com. au has been designed to help you respond to the challenge to become water efficient. It acts as a central repository for relevant information and further advice,so that you can actually achieve significant savings. It also showcases those companies with products that will assist you in your goal.

(   ) 5. You will probably find the article in         .

   A. a newspaper   B. a TV programme

   C. radio broadcast   D. Internet

(   ) 6. What can we do to save water?

   A. Find more water resources.

   B. Use less water everywhere,every time.

   C. Realize the importance of saving water.

   D. Unlock economic benefits of being water efficient.

(   ) 7. What is NOT the reason to save water?

   A. There are more and more people in the world.

   B. The water resources are limited.

   C. Agriculture needs more water.

   D. The water is very important for us.

(   ) 8. What is the main idea of this passage?

   A. Water is very important for the human.

   B. Everybody has a responsibility to save water.

   C. It's time to be water efficient.

   D. Let's save water for our future generations.

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