问题 问答题

一近年来,燃油价格不断上涨,寻找替代燃料成为热门话题。以乙醇汽油(乙醇与汽油按一定比例混合)代替汽油或燃油和汽车改用天然气都是解决能源问题的有效措施。

请回答:

(1)使用天然气代替汽油作为汽车燃料有什么优点?

(2)为防止中毒,使用天然气热水器时,应注意什么?

(3)写出天然气在空气中充分燃烧的化学方程式。

答案

(1)①价格比使用汽油低(或经济实惠)

②减少对环境的污染

(2)要打开窗户,通风透气,使氧气充足

(3)CH4+2O2CO2+2H2O

单项选择题 共用题干题
阅读理解

The apartments for sales,40 minutes’ walk to the gold coast beach, on the ground floor is a private patio(天井), fully fitted kitchen, resting room with feature fireplace and a second reception room which could be used as a dinning room or third downstairs bedroom. On the first floor are two double bedrooms, one of which leads onto a sunny terrace(阳台), fully tiled bathroom with bath and shower. The property is in excellent condition throughout and is ready to move straight into Sky TV, telephone and broadband are connected.

Status: Available                                 Price: EUR¢115,000

Telephone: 00351-981888988         Location: Mollina Malaga Province Spain

Apartment furnished for sale at an unbelievable price. The apartment is part of a small complex with swimming pool and a public resting-room with TV, relaxing area, changing areas, etc. The apartment is on the market fully furnished, air conditioning, with good environment to all divisions of the apartment. If you are thinking tapping into the rental market while the property is empty during the year, this property could be your best bet at the best possible price.

Number of Bedrooms: 2

Status: Available                                 Price: EUR¢147,000

Telephone: 00331-961777017                     Location: Sao Leiria Portugal

Nice villa for sale. The villa has 4 bedrooms and 4 bathrooms. Beach at walking distance. Outside there is a swimming pool. The villa is just outside inland coast in a small villa of 20 houses.

Status: Available                               Price: EUR¢340,000

Telephone: 04811-961999018                     Location: Inland Costal Area

小题1:The apartments in the first advertisement have the following advantages Except ________.

A.the rest room has a fire fireplace

B.the bathroom has bath and shower

C.the apartments are ready to move straight into

D.it has a public resting-room with TV小题2:If you want to buy an apartment with a public relaxing area, you should dial ________.

A.00351-981888988

B.00331-961777017

C.04811-961999018

D.05355-941445535小题3:What’s the meaning of the underlined part in the second advertisement?

A.Knocking into.

B.Putting into.

C.Taking advantages of.

D.Getting into.小题4:From the advertisements we can know the apartments ________.  

A.are in different areas

B.are in the same developing area

C.are of the same price

D.belong to the same developing company