题目内容

【题目】语法填空

In most citiesrich or poor__1_ is the poorer that are most at risk from floods and natural disasters.It was __2_ poor of New Orleansnearly a third of the population_3__ lived in the lowestlying parts of the city and suffered most _4__ hurricanes.Similarlyit was the urban poor of Honduras and its neighbors __5_ were struck hardest by Hurricane Mitch in 1998.And it is the people of the slums(贫民窟) more widely in Latin America who are most likely to be attacked.

In some placestoo little waternot too much_6_(be) the problem.China's thirst for industry and _7__(irrigate) has combined with climate change to drain the aquifers(蓄水层)Droughts seem _8__(be) even more frequent in northern Chinaand southern cities such as Guangzhou are affectedtoo.Rivers are drying up: the Yellow River now flows to the sea for only a few weeks a year.And the rainwhen it comesis acid.To make matters __9__(bad)the glaciers that China and India _10_(part) depend on are melting.Benefits from extra water supplies will be shorttermand damaged by floods.

【答案】详见解析

【解析】

1it 要填的词与后面的that一起构成强调句,被强调部分是句子的主语the poorer,故填it

2the 形容词前用定冠词,表示一类人;the poor“穷人”。

3who 所填词引导非限制性定语从句,在从句中作主语,指人,故用who

4from suffer from“忍受……之苦”是固定搭配。

5that/who 本句是一个强调句,被强调部分是句子的主语,were struck是句子的谓语,所填词与句首的it was一起构成强调句,所以应为that/who

6is 由上下文判断,句子应用一般现在时,而且其主语是too little water,所以填is

7irrigation 与前面的名词industry并列作for的宾语,故填名词形式。

8to be seem to do是固定用法,意为“好像……”。

9worse to make matters worse是固定表达,意为“更糟糕的是”。

10partly 修饰动词短语depend on,表示“部分地”,所以填副词partly

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【题目】A food chain is a simple way of explaining how each living thing gets its food.For examplea simple African food chain might consist of three parts(1)trees and bushes(2)giraffes; and(3)lions.Each link in a food chain is food for the next link.Food chains always start with plants and end with animals.

Plants are at the bottom of the food chain.Scientists call them producersbecause they use light energy from the sun to produce food from carbon dioxide and water through photosynthesis(光合作用)Animalsunlike plantscan't produce their own food.Insteadthey must eat plants or other animals.This is why scientists call them consumers.

Consumer animals fall into three categories.Herbivores eat only plants.Carnivores eat only other animals.Omnivores eat both plants and animals.In addition to producers and consumersthere are also decomposers.These organismssuch as bacteria and fungifeed on decaying matter.They help the food chain by speeding up the decaying process that releases minerals back into the soil to be absorbed by plants as nutrients.

Most food chains have only four or five links in them.As you go up a food chainthe amount of energy at each level diminishesbecause some of the energy is lost in the form of waste or is used up by the organism at that level.That is why it takes many plantsfor exampleto feed a few giraffes who in turn feed one lion.

Most animals are part of many different food chainsbecause they must eat more than one type of food to satisfy their energy needs.All of these interconnected food chains form a more complex structure called a food web.Humansfor exampleare at the center of a very complex food webbecause we tend to eat many different types of plants and animals.

【语篇导读】 本文是一篇说明文。文章以食物链为话题,分析说明了自然界中动植物相互依存的关系,并提出了食物链中的主体——食草动物、食肉动物和草肉皆食动物。

1Which of the following tells us the African food chain?

ATreesgiraffes and lions live on one another.

BGiraffes eat lions and lions feed on bushes.

CLions live on giraffes and giraffes eat trees.

DBushes live on lions and lions eat giraffes.

2In the second paragraphthe author is mainly to________

Aemphasize the importance of the plants

Bcompare the plants and the animals

Cpresent the scientists' different views

Dexplain the producers and consumers

3The underlined word diminishes(in Paragraph 4)probably means________

Achanges Bdecreases

Ddisappears Dincreases

4Those that may lie in the centre of the food chain are______

Athe omnivores Bthe decomposers

Cthe herbivores Dthe carnivores

5What would be the best title for this passage?

AThe types of plants and animals

BThe differences among the living things

CThree categories of the consumers

DThe food chain in the natural world

【题目】阅读理解

阅读下列短文,从每题所给的四个选项(A、B、C和D)中,选出最佳选项。

Choke Selassie, aged 13, is working hard to help drivers avoid potholes(坑洼). The eighth-grader was inspired to kick off his creation on a recent morning, when his mother was driving him to school. Their car was damaged as it went over a huge pothole in the middle of the street in their hometown of Jackson, Mississippi. He decided to do something about the pothole problem in his city.

Choke developed the app with his friends Rodriguez Ratliff and Emmanuel Brooks. When the app detects a pothole, it is highlighted in red. And if you get close to the pothole, your phone will warn you with a beep. Drivers can also use the app to report any potholes and look for other routes they can take to avoid roads that have them.

The app relies on current available information about the streets of Jackson, already stored in a database of the city’s 311 call system. Through the call system, citizens dial 3-1-1 to report non-emergency problems which include potholes. Choke and his friends determined that focusing on the 10 busiest streets in Jackson would give them a large enough sample size to test the prototype.

While developing the app, the boys took part in a Minority Male Makers Program sponsored by Verizon and held at Jackson State University. They learned 3D printing and design, and how to create apps. Through the program, Choke and his friends received encouragement and guidance.

Although the app isn’t yet available for sale, Choke is already looking for ways to improve the app. He hopes to add more to it until it spreads all over the country.

【1】Why is the car damage mentioned in the first paragraph?

A. To scold the road builders.

B. To introduce their bad luck.

C. To tell the inspiration for the app.

D. To warn the danger of careless driving.

【2】What is the app used to do?

A. Warn drivers about potholes.

B. Help drivers obey traffic rules.

C. Tell drivers to avoid red lights.

D. Stop drivers using mobile phones.

【3】How does the app work through the 311 call system?

A. By replying to citizens’ calls.

B. By broadcasting traffic accidents.

C. By settling non- emergency problems.

D. By using its information about potholes.

【4】Which can be Choke’s future target?

A. Encouraging more kids to create apps.

B. Taking part in more learning programs.

C. Making the app available for sale online.

D. Making the app include streets nationwide.

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