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地球的大气层中，基本不变的成分为氧、氮、氩等，占大气总量的99.96%，可变气体成分主要有二氧化碳（CO2），水气和臭氧等，这些气体的含量很少，但对大气物理状况影响却很大。据研究：人类大量燃烧矿物燃料放出大量CO2，使大气中的CO2浓度不断增大，是导致“温室效应”的主要原因，即：使大气的平均温度上升，从而导致一系列生态环境问题，由此可判断CO2 [ ] A．对可见光的吸收作用很强 B．对无线电波的吸收作用很强 C．对紫外线的吸收作用很强 D．对红外线的吸收作用很强
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【单选题】Renewable Energy Sources Today petroleum (石油) provides around 40% of the world’s energy needs, mostly fuelling automobiles. Coal is still used, mostly in power stations, to cover one-quarter of our e...
A.
renewable.
B.
recyclable.
C.
damaging.
D.
scarce.
【单选题】读下图，回答各题。 导致上题中昼夜温差最小的作用是（） ①大气对太阳辐射的削弱作用②地面对太阳辐射的吸收作用 ③大气的保温作用④地面的辐射作用
A.
①②
B.
③④
C.
①③
D.
②④
【单选题】汽车发动机排出的有害物质中（）在一定浓度下，由于对于光的吸收作用能使大气着色，从而明显地降低大气能见度，影响地下或空中交通。
A.
CO
B.
HC
C.
NO 2
D.
NO
【单选题】All over Europe, and in North America, there’re lakes and forests which are dead or (71) and the (72) is thought to be acid rain. What is acid rain Mr. Justin Cook, a scientist, explains: "All fossil ...
A.
All over Europe, and in North America, there’re lakes and forests which are dead or (71) and the (72) is thought to be acid rain. What is acid rain Mr. Justin Cook, a scientist, explains: "All fossil fuels, (矿物燃料)，that (73) oil, coal and gas, contain sulphur. When these are burnt, for example (74) motor vehicles, they form sulphuric acid (硫酸)This (75) UP into the air, and soon it falls back to (76) , into lakes and (77) trees in forests." This can cause many local problems. 78 a result, lakes become acidic, fish disappear and trees are killed. The pollution is carried great distances by the wind, so sulphuric acid (79) in Britain can travel as far as Scandinavia (斯堪的纳维亚). Czech is one of the countries with the most acid rains and large areas of (80) consist only (81) dead trees.
B.
Is there (82) that can be done about acid rain Mr. cook says: "The rain (83) of acid rain is (84) power stations to install filters that (85) the acid getting out into the air. Here in Britain, the only (86) that has been taken is that the chimneys are built (87) so that the pollution is more distributed." If the petrol used in motor vehicles (88) lead--free, then it Would be possible to filter exhaust fuses (废气) which are a (89) cause of pollution. But these filter mechanisms (机械装置)can not work (90) the leads is removed.
【单选题】All over Europe, and in North America, there’re lakes and forests which are dead or (71) and the (72) is thought to be acid rain. What is acid rain Mr. Justin Cook, a scientist, explains: "All fossil ...
A.
All over Europe, and in North America, there’re lakes and forests which are dead or (71) and the (72) is thought to be acid rain. What is acid rain Mr. Justin Cook, a scientist, explains: "All fossil fuels, (矿物燃料)，that (73) oil, coal and gas, contain sulphur. When these are burnt, for example (74) motor vehicles, they form sulphuric acid (硫酸)This (75) UP into the air, and soon it falls back to (76) , into lakes and (77) trees in forests." This can cause many local problems. 78 a result, lakes become acidic, fish disappear and trees are killed. The pollution is carried great distances by the wind, so sulphuric acid (79) in Britain can travel as far as Scandinavia (斯堪的纳维亚). Czech is one of the countries with the most acid rains and large areas of (80) consist only (81) dead trees.
B.
Is there (82) that can be done about acid rain Mr. cook says: "The rain (83) of acid rain is (84) power stations to install filters that (85) the acid getting out into the air. Here in Britain, the only (86) that has been taken is that the chimneys are built (87) so that the pollution is more distributed." If the petrol used in motor vehicles (88) lead--free, then it Would be possible to filter exhaust fuses (废气) which are a (89) cause of pollution. But these filter mechanisms (机械装置)can not work (90) the leads is removed.
【单选题】A．肾小管对该物质有重吸收作用B．肾小管对该物质有分泌作用C．两者均有D．两者均无 (1994年) 某种物质的血浆清除率等于肾小球滤过率时意味着
A.
A．
B.
B．
C.
C．
D.
D．
【单选题】Renewable Energy Sources Today petroleum (石油) provides around 40% of the world’s energy needs, mostly fuelling automobiles. Coal is still used, mostly in power stations, to cover one-quarter of our e...
A.
is the first hydroelectric dam in the world.
B.
is of the same size as the US’s Hoover Dam.
C.
can generate around 3% of world electricity.
D.
is the largest hydroelectric dam in the world.
相关题目：
【单选题】Renewable Energy Sources Today petroleum (石油) provides around 40% of the world’s energy needs, mostly fuelling automobiles. Coal is still used, mostly in power stations, to cover one-quarter of our e...
A.
renewable.
B.
recyclable.
C.
damaging.
D.
scarce.
【单选题】读下图，回答各题。 导致上题中昼夜温差最小的作用是（） ①大气对太阳辐射的削弱作用②地面对太阳辐射的吸收作用 ③大气的保温作用④地面的辐射作用
A.
①②
B.
③④
C.
①③
D.
②④
【单选题】汽车发动机排出的有害物质中（）在一定浓度下，由于对于光的吸收作用能使大气着色，从而明显地降低大气能见度，影响地下或空中交通。
A.
CO
B.
HC
C.
NO 2
D.
NO
【单选题】All over Europe, and in North America, there’re lakes and forests which are dead or (71) and the (72) is thought to be acid rain. What is acid rain Mr. Justin Cook, a scientist, explains: "All fossil ...
A.
All over Europe, and in North America, there’re lakes and forests which are dead or (71) and the (72) is thought to be acid rain. What is acid rain Mr. Justin Cook, a scientist, explains: "All fossil fuels, (矿物燃料)，that (73) oil, coal and gas, contain sulphur. When these are burnt, for example (74) motor vehicles, they form sulphuric acid (硫酸)This (75) UP into the air, and soon it falls back to (76) , into lakes and (77) trees in forests." This can cause many local problems. 78 a result, lakes become acidic, fish disappear and trees are killed. The pollution is carried great distances by the wind, so sulphuric acid (79) in Britain can travel as far as Scandinavia (斯堪的纳维亚). Czech is one of the countries with the most acid rains and large areas of (80) consist only (81) dead trees.
B.
Is there (82) that can be done about acid rain Mr. cook says: "The rain (83) of acid rain is (84) power stations to install filters that (85) the acid getting out into the air. Here in Britain, the only (86) that has been taken is that the chimneys are built (87) so that the pollution is more distributed." If the petrol used in motor vehicles (88) lead--free, then it Would be possible to filter exhaust fuses (废气) which are a (89) cause of pollution. But these filter mechanisms (机械装置)can not work (90) the leads is removed.
【单选题】All over Europe, and in North America, there’re lakes and forests which are dead or (71) and the (72) is thought to be acid rain. What is acid rain Mr. Justin Cook, a scientist, explains: "All fossil ...
A.
All over Europe, and in North America, there’re lakes and forests which are dead or (71) and the (72) is thought to be acid rain. What is acid rain Mr. Justin Cook, a scientist, explains: "All fossil fuels, (矿物燃料)，that (73) oil, coal and gas, contain sulphur. When these are burnt, for example (74) motor vehicles, they form sulphuric acid (硫酸)This (75) UP into the air, and soon it falls back to (76) , into lakes and (77) trees in forests." This can cause many local problems. 78 a result, lakes become acidic, fish disappear and trees are killed. The pollution is carried great distances by the wind, so sulphuric acid (79) in Britain can travel as far as Scandinavia (斯堪的纳维亚). Czech is one of the countries with the most acid rains and large areas of (80) consist only (81) dead trees.
B.
Is there (82) that can be done about acid rain Mr. cook says: "The rain (83) of acid rain is (84) power stations to install filters that (85) the acid getting out into the air. Here in Britain, the only (86) that has been taken is that the chimneys are built (87) so that the pollution is more distributed." If the petrol used in motor vehicles (88) lead--free, then it Would be possible to filter exhaust fuses (废气) which are a (89) cause of pollution. But these filter mechanisms (机械装置)can not work (90) the leads is removed.
【单选题】A．肾小管对该物质有重吸收作用B．肾小管对该物质有分泌作用C．两者均有D．两者均无 (1994年) 某种物质的血浆清除率等于肾小球滤过率时意味着
A.
A．
B.
B．
C.
C．
D.
D．
【单选题】Renewable Energy Sources Today petroleum (石油) provides around 40% of the world’s energy needs, mostly fuelling automobiles. Coal is still used, mostly in power stations, to cover one-quarter of our e...
A.
is the first hydroelectric dam in the world.
B.
is of the same size as the US’s Hoover Dam.
C.
can generate around 3% of world electricity.
D.
is the largest hydroelectric dam in the world.
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