Question

【題目】

Tide is the regular rise and fall of the ocean level caused by the movement of the sun, the earth and the moon. It is considered a promising source of green energy to produce electricity in coastal areas.

To make use of tidal energy, we need to build tidal power stations. The bays and the river mouths where the tide is high (the tidal range is more than 10 metres) are usually perfect sites to build tidal power stations. There are many such places in the world. According to the IRENA (the International Renewable Energy Agency), by just using 2% of our coastlines, we can produce 4, 383TWh of ocean power each year, enough to meet 16. 4% of the world's electricity needs.

To build a tidal power station, we need to build a dam. In the dam are many turbines and on each turbine there is an electric generator. When the tide rises, water comes through the dam, the turbines turn and the electric generators work, producing electricity. When the tide fall, water goes out through the dam, the turbines turn again. The electric generators continue to work.

Tidal energy has it advantages. Using tidal energy to produce electricity is much cheaper than using the traditional energy, like coal or gas. For example, the Rance Tidal Power Station in France has been there for over 50 years, producing around 540, 000TWh of electricity each year. The cost is only 1.3 cents/TWh. Tidal energy can be used nearly 24 hours a day. As long as the sun, the earth and the moon exist, we can use it to produce electricity. But without sunshine, here is no solar energy. When there is no wind, electric generators will not work. In addition, with the development of modern technology, tidal energy can be stored and used to produce electricity continuously. However, we still have some problems to solve. It is difficult to build a dam in the sea, and the cost is very high. Moreover, it's expensive to keep a tidal power station in is best condition.

Scientists are working on them.

【1】A tidal power station is best built __________.

A.at a river mouth with windB.along the coast with waves

C.in a bay with tide high enoughD.in coastal areas with sunshine

【2】The underlined word "turbine" in Paragraph There is a machine to__________.

A.make the tide rise and fallB.make an electric generator work

C.let water go through the damD.keep the dam in good condition

【3】What advantage does tidal energy have?

A.We can use it to get useful tide.B.It can improve the ocean environment.

C.We can use it nearly all the time.D.It meets 16. 4% of the electricity needs.

【4】How can we make better use of tidal energy?

A.By digging more bays and river mouths.

B.By building cheaper tidal power stations.

C.By closing traditional electric power.

D.By using tidal energy to replace other energy.

Answer 1

【答案】

【1】C

【2】B

【3】C

【4】B

【解析】

本文主要向我們介紹了潮汐能，它的優(yōu)勢(shì)以及目前存在的問題。

【1】

細(xì)節(jié)理解題。根據(jù)第二段中“The bays and the river mouths where the tide is high (the tidal range is more than 10 metres) are usually perfect sites to build tidal power stations.”可知，漲潮時(shí)(潮差超過10米)的海灣和河口通常是建造潮汐發(fā)電站的理想地點(diǎn)。故選C。

【2】

推理判斷題。分析第三段中“In the dam are many turbines and on each turbine there is an electric generator. When the tide rises, water comes through the dam, the turbines turn and the electric generators work, producing electricity. When the tide fall, water goes out through the dam, the turbines turn again.”可知，水壩里有許多渦輪機(jī)，每個(gè)渦輪機(jī)上都有一個(gè)發(fā)電機(jī)。漲潮時(shí)，水通過大壩，渦輪轉(zhuǎn)動(dòng)，發(fā)電機(jī)工作，產(chǎn)生電力。退潮時(shí)，水流通過大壩流出，渦輪再次轉(zhuǎn)動(dòng)。所以turbine是讓發(fā)電機(jī)工作的機(jī)器。故選B。

【3】

推理判斷題。A：我們可以用它來獲取有用的潮汐。B：它可以改善海洋環(huán)境。C：我們幾乎可以隨時(shí)使用它。D：滿足16.4%的電力需求。根據(jù)第四段中“Using tidal energy to produce electricity is much cheaper than using the traditional energy, like coal or gas.”和“In addition, with the development of modern technology, tidal energy can be stored and used to produce electricity continuously.”可知，潮汐發(fā)電的優(yōu)勢(shì)一是利用潮汐能發(fā)電比使用煤炭或天然氣等傳統(tǒng)能源要便宜得多；二是隨著現(xiàn)代技術(shù)的發(fā)展，潮汐能可以被儲(chǔ)存起來，并用于持續(xù)發(fā)電。結(jié)合選項(xiàng)，故選C。

【4】

細(xì)節(jié)理解題。A：挖掘更多的海灣和河口。B：通過建造更便宜的潮汐發(fā)電站。C：通過關(guān)閉傳統(tǒng)電力。D：利用潮汐能來替代其他能源。根據(jù)第二段中“To make use of tidal energy, we need to build tidal power stations.”可知，為了利用潮汐能，我們需要修建潮汐能電站。結(jié)合選項(xiàng)，故選B。