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【简答题】
Running is becoming popular these days .Many of us run for health. Doctors say most of the health problems come from these bad habits:eating too much, drinking too much,smoking(吸烟), and not taking exercise. Doctors tell us,“Eat and drink less, and exercise more.” Running is good because it helps build a strong heart.. It also helps most fat people lose weight(重量). A 68-year-old woman runs three times a week. She runs to lose weight . “I want to look beautiful, but I love to eat , ”she says. Running is good for health in other ways, too. Many runners say running keeps many small health problems away. “Running is my doctor,”says a man. Running can also help people relax,so today men and women of all ages enjoy running. 根据短文内容,选择正确的答案。(10分) 小题1:Many people enjoy running because they want to                . A.keep healthy          B.eat much        C.run fast 小题2:Doctors tell us to            more. A.drink                B.eat             C.exercise 小题3:The underlined phrase “lose weight”means “        ”in Chinese. A.自信               B.减肥           C.放松 小题4:The last(最后的)paragraph (段) shows          . A. running can also help people relax B.running is good for people,s health C.running helps build a strong heart 小题5:The writer mainly tells us            . A.how we should run B.how to lose weight C.running is a good way to keep fit
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【单选题】大气污染是指大气中的污染物或由它转化成的二次污染物的浓度达到了有害度的现象。造成大气污染的主要物质是( )。
A.
一氧化碳
B.
二氧化碳
C.
二氧化硫
D.
氢氧化物
【判断题】( )24、蓄能型缓冲器适用于额定速度大于1m/s的电梯。
A.
正确
B.
错误
【单选题】二氧化硫是大气污染的主要污染物之一,也是形成“酸雨”的主要成分之一,它主要来源于什么?
A.
大量矿石的开采
B.
工地施工扬尘
C.
抽烟
D.
大量含硫化石燃料的燃烧
【判断题】基床是指铁路路基面以下受上部静荷载作用和水文、气候等外界条件影响的深度范围。
A.
正确
B.
错误
【单选题】小汽车造成的环境污染主要是 [     ]
A.
大气污染,水污染
B.
大气污染,噪声污染
C.
固体废弃物污染,水污染
D.
水污染,放射性污染
【判断题】造成大气污染的主要因素,首先与污染物排放量有关,污染物排放量越大,污染程度也相应增加。然而,客观条件如气象、地形、地物等因素也影响大气污染程度的主要因素。
A.
正确
B.
错误
【简答题】强调了这一点 this point
【简答题】造成大气污染的主要污染物质有哪些?简述其来源及危害。
【单选题】火电厂烟气中造成大气污染的主要污染物是()
A.
二氧化硫
B.
粉尘
C.
氮氧化物
D.
微量重金属
【判断题】火力发电厂排出的烟气会造成大气污染,主要污染物质是二氧化硫。()
A.
正确
B.
错误
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