Teenagers are always stressed out now.  They are often too busy to think about their diets and exercise. The truth is that healthy___, along with regular exercise is the only way to keep fit.

        During your teenager years, _____ is important to give your body the energy that needs. 50% of your calories(卡路里)should come from rice,____ __, vegetables and fruit. You also need to ___ a lot of water, six to eight glasses a day, _____ water will improve your skin and give you ______ hair.

        Exercise can help to make you look good, feel good and be healthy. Scientists suggest that ____ should spend at least 30 minutes exercising every day.

        When you exercise, your body produces ____. It makes you __ and energetic. It can even help you _____ better at night and let you pay more attention when you study in the day.

1.A. cooking       B. thinking        C. drinking         D. eating

2.A. she           B. it             C. he              D. you

3.A. exercise       B. bread          C. air              D. time

4.A. eat           B. drink           C. taste            D. feel

5.A. Some         B. Little           C. Enough         D. Any

6.A. healthy        B. bad            C. dry             D. ugly

7.A. teenagers      B. workers         C. doctors          D. adults

8.A. nothing        B. anything        C. everything       D.something

9.A. relaxed        B. tired            C. worried         D. surprised

10.A. play          B. sleep           C. drive           D. work

If you have a bottle of water recycled(再利用) from urine(尿), would you drink it? Astronauts at the ISS may soon do so.
NASA(美国航空航天局) said it would use a high-tech machine to recycle wastewater at the ISS. The machine will recycle water for washing hands, shower water, water for brushing teeth and even urine to make drinking water. It will save millions of dollars each year.
At present, each ISS astronaut uses about 4.4 liters(升) of water every day. It costs about 24 million dollars a year to send water up to the ISS. A liter of water costs about $ 11,000.
The machine will be sent to the ISS later. NASA hopes it will recycle about 93% of all the water used on the station.
Will the water be clean? Different chemicals will be put in the wastewater. The water will be heated to 130℃ to kill bacteria(细菌). Scientists say that the recycled water is thousands of times better than the water from a city tap.
【小题1】NASA will use a high-tech machine to recycle wastewater at the ISS to ______.

A small town named Bundanoon in Australia has decided to stop the sale of bottled water .They say that bottled water can cause environmental problems. Too many resources(???) are used to make bottled water. Then people finish drinking the water, the bottled water will be thrown away and go into dustbins .so they require local people in the town to stop buying bottled water and use tap water to drink. Visitors are encouraged to get water from water stations in the main streets, and fill the water in bottles that can be used again .The decision has been supported by all the shopkeepers in the town. Bundanoon is the world's first town that has got its shops to stop selling bottled water .Probably we should follow the example. Let's stop buying bottled water and use tap water.

阅读下面短文，根据短文内容完成表格中所缺信息，每空一词。（共10小题，每小题1分，计10分）

Summer is coming soon. When is the best time for swimming in the day in summer?

If you would like to swim indoors, a good time in the day is the early hours-the body has the most energy to use because the body has woken up and will be ready for all kinds of different activities of the day. The body is going to work with enough energy and therefore a person will feel more comfortable if he swims during the early hours of the day.

Swimming early in the day can also be good for anyone who plans to swim outdoors. The conditions outside will be excellent: the water will not be too cold or too hot, and the air will be just clean and fine. Everything is suitable.

Usually, it is not a good idea to swim later in the day because one’s body is tired after work for a whole day and also the weather conditions can be the worst in the later parts of the day.

However, there are still some exceptions. Different people feel different and one’s body acts differently at different time of the day. When a person is feeling active and is not tired at all after work, it may be a better time to swim for him than for others. If he is alert(警觉的) that time, he is safe in the water.

In a word, the best time can change for every person. The person’s body condition decides when the best time for swimming is.