题目内容
18．Recently more and more big cities in China are having heavy smog （雾霾）．There is a popular joke about it on the Internet，"The longest distance in the world is not between life and death，but between you and me when I hold your hand in the street but cannot see your face．"Air pollution is one of the causes of lung （肺） cancer．What shall we do to keep healthy in this situation？Try to remember the following advice：
▲Reduce outdoor activities．
▲If you have to go outside，remember to wear a mask．
▲Drink more water a day and have fresh food．
▲Wash hands and face after outdoor activities．
▲Keep indoor environment clean．
46．The underlined word"mask"means"C"in Chinese．
A．帽子
B．手套
C．口罩
47．What is one of the causes of lung cancer according to this article？C
A．Smoking．
B．Drinking．
C．Air pollution．
48．The writer advises people to reduce outdoor activities becauseA．
A．heavy smog is bad for health
B．outdoor activities are too boring
C．they don't want to go out
49．The writer thinks we shouldCevery day in order to keep healthy．
A．drink enough water
B．have fresh food
C．both A and B
50．Which statement is TRUE according to the passage？C
A．Air pollution can make people blind．
B．We'd better wash hands and face before going outside．
C．We should stay indoor as much as possible．
分析 文章大意：这是一篇说明文，主要介绍最近中国越来越多的大城市在遭受烟雾污染．空气污染是肺癌的原因之一，在这种情况下，我们应该减少户外活动．如果你要外出，记得戴口罩．每天喝更多的水，吃新鲜的食物．户外活动后洗手、洗脸．保持室内环境清洁．
解答 46．答案：C．词意猜测题．根据第一句Recently more and more big cities in China are having heavy smog最近中国越来越多的大城市在遭受烟雾污染．可知，应该是外出要戴口罩，选C．
47．答案：C．细节理解题．根据第二段第一句Air pollution is one of the causes of lung （肺） cancer．空气污染是肺癌的原因之一．可知，空气污染是肺癌的原因之一．选C．
48．答案：A．细节理解题．根据第二段What shall we do to keep healthy in this situation？Try to remember the following advice：在这种情况下我们应该怎样保持健康？试着记住以下建议：可知，减少外出是因为雾霾对身体有害．选A．
49．答案：C．细节理解题．根据倒数第三行Drink more water a day and have fresh food．每天多喝水，吃新鲜食物．可知，保持健康要多喝水和吃新鲜蔬菜．A，B都正确，选C．
50．答案：C．推理判断题．根据第四行Reduce outdoor activities．减少户外活动．可知，C选项"我们应该尽可能多地呆在室内．"是正确的．选C．
点评 阅读题型，要注重句子与句子之间、段落与段落之间逻辑关系以及对篇章的整体理解．根据所给问题选择正确选项完成试题．
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相关题目
8．____ it's raining，_______ they expect to go to the park．（ ）
| A． | Although； but | B． | Although；/ | C． | /；/ | D． | But； although |
3．Different vitamins are found in different foods．Then which foods should be eaten to keep us healthy？Let's look at some important vitamins for the answer．
36．WithoutA，We cannot see will in darkness．
A．vitamin A
B．vitamin B
C．vitamin C
D．vitamin D
37．According to the passage，vitamin B can be found inB．
A．fish liver oil
B．grains，meat and fish
C．milk and vegetables
D．animal liver and eggs
38．From the passage，we know that vitamin C is good forC．
A．the skin
B．the heart
C．blood vessels
D．nerve and muscles
39．Some milk producers add vitamin D to milk mainly to help children toC．
A．have good eyesight
B．produce blood cells
C．get enough calcium
D．heal wounds quickly
40．According to the passage above，which of the following is"TRUE"？D
A．We can get vitamins from everything．
B．We can live healthily with few vitamins
C．Vitamins are not important to our health．
D．Different vitamins can help us in different ways．
| Vitamin A helps to protect skin from becoming dry．It is also helpful to the eyes．Without vitamin A，you cannot see well in darkness．Vitamin A is found in animal liver and yellow part of eggs．Sweet potatoes，carrots and other dark colored fruit and vegetables have something that the body can change into vitamin A． |
| Vitamin B changes foods into energy and helps the heart and nervous system（神经系统） to work smoothly．Without it，we will be weak and will not grow．It is found in grains and other foods like beans，nuts，meat and fish． Vitamin B helps to produce red blood cells．It is found in foods like eggs，meat，fish，milk and green leafy vegetables． |
| Vitamin C is needed for strong bones and teeth，and for healthy blood vessels（血管）．It also helps wounds to heal（意合） quickly．The body stores little vitamin C，so we must get it in foods like oranges，and cabbage． |
| Vitamin D increases the levels of calcium（钙） in the blood．Calcium is needed for verve and muscle（肌肉） cells to work normally，as well as to build strong bones．Fish liver oil has vitamin D．In some countries，milk producers add vitamin D to milk so that it will be good for children． |
A．vitamin A
B．vitamin B
C．vitamin C
D．vitamin D
37．According to the passage，vitamin B can be found inB．
A．fish liver oil
B．grains，meat and fish
C．milk and vegetables
D．animal liver and eggs
38．From the passage，we know that vitamin C is good forC．
A．the skin
B．the heart
C．blood vessels
D．nerve and muscles
39．Some milk producers add vitamin D to milk mainly to help children toC．
A．have good eyesight
B．produce blood cells
C．get enough calcium
D．heal wounds quickly
40．According to the passage above，which of the following is"TRUE"？D
A．We can get vitamins from everything．
B．We can live healthily with few vitamins
C．Vitamins are not important to our health．
D．Different vitamins can help us in different ways．
10．New Energy in the Twenty-first Century
Energy from the wind
Wind is a kind of clean energy，and there is lots of it，But，if there's no wind，there is no wind energy．
Energy from the water
When water moves from a high place to a lower place，it can make electricity（电）without pollution．However，people have to build dams（水坝） to use this energy，and building dams is very expensive．
Energy from the earth
There is heat in the rocks under the earth．Scientists use the heat to make geothermal（地热的）energy．This kind of energy is cheap，but it is only possible in a few places in the world．
Energy from the sun
Solar panels （太阳电池板） on the roofs of houses can turn energy from the sun into electricity．Solar power is clean and plentiful（丰富的）．but when the weather is bad，It doesn't work．
New Energy in Twenty-first Century
Energy from the wind
Wind is a kind of clean energy，and there is lots of it，But，if there's no wind，there is no wind energy．
Energy from the water
When water moves from a high place to a lower place，it can make electricity（电）without pollution．However，people have to build dams（水坝） to use this energy，and building dams is very expensive．
Energy from the earth
There is heat in the rocks under the earth．Scientists use the heat to make geothermal（地热的）energy．This kind of energy is cheap，but it is only possible in a few places in the world．
Energy from the sun
Solar panels （太阳电池板） on the roofs of houses can turn energy from the sun into electricity．Solar power is clean and plentiful（丰富的）．but when the weather is bad，It doesn't work．
New Energy in Twenty-first Century
| Advantages | Disadvantages | |
| Wind Energy | Clean．There is a lot． | It needs （57）wind． |
| Water Energy | （58）No pollution | It is expensive． |
| Geothermal Energy | （59）Cheap | only possible in a few places． |
| Solar Energy | Clean and plentiful． | It depends too much on （60）weather． |