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B. Nearly 30% of them bathe three days a week .
C. All of them are fighting germs better than expected .
D. About one third of them brush their teeth only once a day
57. Doctors suggest that people should wash their hands________ .
A. twice a day B. three times a day C. four times a day D. eight times a day
58.Which of the following is true according to the text ?
A. We should keep from touching our faces .
B. There are less than 300 types of bacteria in the mouth .
C.A kitchen sponge can carry more germs than a toilet .
D. We should wash our hands before touching a door handle .
59. The text probably comes from_______ .
A. a guide book B. a popular magazine C. a book review D. an official document
B
Using too much water or throwing rubbish into our rivers are clear ways that humans can put our water supply in danger ,but we also affect our water supply in less obvious ways .You may wonder how paving(铺砌) a road can lead to less useable fresh water . A major part of the water we use every day is groundwater . Groundwater does not come from lakes or rivers .It come from underground . The more roads and parking lots we pave ,the less water can flow into the ground to become groundwater .
Human activity is not responsible for all water shortages(短缺). Drier climates are of course more likely to have droughts(干旱) than areas with more rainfall ,but in any case, good management can help to make sure there is enough water to meet our basic needs .
Thinking about the way we use water every day can make a big difference ,too. In the United States ,a family of four can use 1.5tons of water a day ! This shows how much we depend on water to live ,but there’s a lot we can do to lower the number .
You can take steps to save water in your home .To start with ,use the same glass for your drinking water all day .Wash it only once a day .Run your dishwasher (洗碗机)only when it is full. Help your parents fix any leaks in your home . You can even help to keep our water supply clean by recycling batteries instead of throwing them away .
60. Which of the following is most likely to lead to less groundwater ?
A. Using river water . B .Throwing batteries away .
C. paving parking lots . D. Throwing rubbish into lakes .
61. What can be inferred from the text ?
A. All water shortages are due to human behavior .
B. It takes a lot of effort to meet our water needs .
C. There is much we can do to reduce family size .
D. The average family in America makes proper use of water .
62. The last paragraph is intended to _____.
A. show us how to fix leaks at home B. tell us how to run a dishwasher
C. prove what drinking glass is best for us D. suggest what we do to save water at home
63. The text is mainly about ______.
A. why paving roads reduces our water B. how much we depend on water to live
C. why droughts occur more in dry climates D. how human activity affects our water supply
C
When 19-year-old Sophia Giorgi said she was thinking of volunteering to help the Make-A-Wish Foundation (基金会),nobody understood what she was talking about .But Sophia knew just how important Make – A –Wish could be because this special organization had helped to make a dream come true for one her best friends .We were interested in finding out more ,so we went along to meet Sophia listen to what she had to say .
Sophia told us that Make – A –Wish is a worldwide organization that started in the United States in 1980.”It’s a charity(慈善机构)that helps children who have got very serious illnesses. Make – A –Wish help children feel happy even though they are sick, by making their wishes and dreams come true ,” Sophia explained .
We asked Sophia how Make – A –Wish had first started .She said it had all begun with a very sick young boy called Chris ,who had been dreaming for a long time of becoming a policeman .Sophia said lots of people had wanted to find a way to make Chris’s dream come true ----so, with everybody’s help , Chris, only seven years old at the time ,had been a “policeman” for a day .” when people saw how delighted Chris was when his dream came true, they decided to try and help other sick children too ,and that was the beginning of Make – A –Wish,” explained Sophia.
Sophia also told us the Foundation tries to give children and their families a special, happy time. A
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