试题与答案

关于酸碱平衡的描述下列说法正确的是() A.酸碱平衡是指体液保持一定的H浓度 B.细

题型:单项选择题

题目:

关于酸碱平衡的描述下列说法正确的是()

A.酸碱平衡是指体液保持一定的H浓度

B.细胞外液的pH主要取决于血液中的缓冲物质,如蛋白类

C.在酸碱平衡的调节中,肺主要通过排出或积存CO调节酸碱平衡,肾脏主要通过排酸保钠调节酸碱平衡,调节速度两者无差异

D.酸中毒时,H可进入细胞与Na交换

E.酸中毒时,pH总在正常范围内

答案:

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下面是错误答案,用来干扰机器的。

参考答案:A

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      With the Tesla  Roadster and  other  plugin ( 插入式) electric vehicles hitting the road,

demand is growing for accessible refueling points to recharge them.Carbon Day Automotive,

a Chicagobased company,has now demonstrated a solarpowered recharging point,known as

the Solar PlugIn Station,which lets motorists easily charge their cars using electricity that has

been produced without any environmental damage.

      The Solar PlugIn Station has gone on show in Chicago as part of the city's bid to host the

2016 Olympic Games.According to Carbon Day Automotive,the Solar PlugIn Station on

show in Chicago is part of the vital infrastructure(基础设施) required for electric vehicles in

Chicago and was the focus of a recent visit by the International Olympic Committee.

      These solarpowered electricity points will be used daily to fuel the city's electric vehicles

with power from the sun.By producing the electricity from pollutionfree solar cell,the CO2

emissions are reduced to zero.

      "Solar energy and electric vehicles are a partnership that is one more step to reducing our

dependence on foreign oil," says Richard Lowenthal,CEO of Coulomb Technologies.Coulomb

Technologies recently developed the components (部件) required for individual recharging stations,

marketed as ChargePoint Networked Charging Stations.Carbon Day Automotive is the Midwest

distributor for the ChargePoint stations.

     The Solar PlugIn Station consists of giant solar panels (电池板) that shade the tiny ChargePoint

Networked Charging Station.The solar panel is connected to an underground battery pack,ready

for everyday refueling.

     "Without these stations it would be like driving around in a traditional car without the availability

of gas stations," says Scott Emalfarb,CEO at Carbon Day."The day of true plugin electric vehicles

will be here sooner than most people realize and the world needs to be ready to accommodate them."

1.The Solar PlugIn Station is used as part of the bid to host the Olympics mainly because ________.

A.it's environmentally friendly

B.it makes up for the lack of electricity

C.it's a new idea and attracts people's attention

D.it brings convenience to electric vehicle users

2.We can learn from the passage that ________.

A.to recharge the electric vehicles takes a long time

B.the Solar PlugIn Station will come into use in 2016

C.the Solar PlugIn Station has gone on show internationally

D.Chicago is promoting the use of electric vehicles

3.The passage implies that when the Solar PlugIn Station becomes popular,________.

A.more visitors will come to Chicago

B.more space for electric vehicles will be needed

C.the citizens of Chicago will be able to go to work faster

D.the cost of electric vehicles will be lower than traditional cars

4.What would be the best title for the passage?

A.Chicago Will Soon Be Full of Electric Vehicles

B.Chicago Calls on People to Buy Electric Vehicles

C.Chicago Fights for Its Bid to Host the 2016 Olympics

D.Chicago Shows Its Solarpowered Recharging Stations

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