- We gas. I’m afraid we can’t go much further. - I know there’s a gas station ahead. Will it last until we get there? A. run out B. have run out C. are running out of D. have run out of 题目和参考答案——青夏教育精英家教网—

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— We ____ gas. I’m afraid we can’t go much further.

— I know there’s a gas station ahead. Will it last until we get there?

A. run out B. have run out C. are running out of D. have run out of

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One of the world’s richest men has taken a close interest in one of man’s most basic functions：visiting the toilet.Bill Gates’s charitable organization，the Bill and Melinda Gates Foundation，is looking for inventors to design the loo of the future，which，they hope，would improve sanitation for millions of people around the world.

So，what’s wrong with the traditional flush toilet？Firstly，it wastes a huge amount of potential drinking water.Secondly，they are more likely to cause pollution.This is a real problem in many areas of the developing world，where，according to United Nations estimates，unsafe sanitation causes half of all hospitalizations.Younger people are particularly at risk.Illnesses which cause diarrhea are responsible for the deaths of about 1.5 million children a year.Finally，standard lavatories simply aren’t practical in remote areas.

The challenge set by Bill Gates was to come up with a latrine which works without running water，electricity or aseptic tank.It also needed to operate for less than 5 cents.28 designs were displayed at the recent Reinvent the Toilet Fair，in Seattle，USA.Among them was one which turned human waste into electricity using microwaves，another which converted human waste into charcoal，and yet another which used urine for flushing.

But the winner was a solar?powered design which generated hydrogen gas and electricity. The team from the California Institute of Technology(CIT) picked up a prize of $100,000.

But clearly Bill Gates doesn’t feel he’s flushing money down the toilet.After the Seattle event he said，“We couldn’t be happier with the response we’ve gotten.” Gates has even pledged $370 million more to the future toilet project.They hope to field test more prototypes over the next three years.

1.Why is Bill Gates paying people to invent new toilets?

A．Because he wants to test people’s sense of creativity.

B．Because he wants to improve sanitation for many people.

C．Because he thinks the traditional ones are out of fashion.

D．Because he can’t design this kind of things himself.

2.Which of the following is NOT a problem with the traditional flush toilet?

A．They waste too much water.

B．They might cause diseases.

C．They are not always practical.

D．They are too complicated to use.

3.The underlined word “latrine” in the third paragraph might have similar meanings to the word “________” in the text.

A．loo? B．sanitation

C．diarrhea? D．prototype

4.The team from CIT won the prize because their design ________.

A．can change human waste into electricity

B．can turn human waste into charcoal

C．can produce power with solar energy

D．can use urine for flushing

When you travel in South America, you’d better pay attention to the following three kinds of dangerous South American animals.

Piranhas（水虎鱼）

Although only a small number of piranhas are considered to be dangerous to humans, the red-bellied piranha is definitely one of those. Evidence has shown that a large group of piranhas can absolutely eat a herd of large animals crossing the river, leaving only bones. This fish lives in the freshwater streams of South America, and they can smell the blood from far away and launch attacks swiftly. It is said that they are only dangerous to humans if the water volumes are less and lower.

Anacondas（水蟒）

This South American monster of a creature often appears in the films or your nightmares！They have weighed over 230 kilograms. It is often considered to be the biggest snake in the world. You certainly don’t want to get caught alone with this snake due to its method of attacking and killing its victim. It is indeed a remarkably different brand of snake type as it regularly coils（缠绕）around all over its target, increasing the pressure until eventually its victim dies. Its jaws are powered by large muscles that produce enough power for its over 100 sharp teeth to pass through the thick skin of an crocodile. They don’t have poison. Sometimes they prefer to camouflage themselves so they look like their surroundings and swiftly draw back when humans are near.

Golden Poisonous Frogs

The golden poison frog might be the most-deadly of the South American animal, which is protected by means of poison. This very small frog, less than 55 mm in length, packs enough punch（效力）to take down a pair of African bull elephants. This apparently harmless frog has always been known to have killed people who have touched it directly. It’s also been noted that chicken and dogs have died by contacting things on which a golden poison frog had wandered! In intense colors, they normally look attractive to their targets.

1.What can we learn about piranhas from the passage?

A. Piranhas are the most dangerous animals.

B. Piranhas like to live in the deep seabed.

C. Piranhas may attack human beings when the water level is low.

D. Piranhas only attack human beings when they cross the river in groups.

2.How does an anaconda kill its victim according to the passage?

A. It often uses its poison to kill its victim.

B. It often uses its strength to kill its victim.

C. It kills its victim mainly using its powerful teeth.

D. It kills its victim with the help of other snakes.

3.The underlined word “camouflage” in Paragraph 3 means “________”.

A. hide itself by appearing like the surroundings

B. terrify and capture the enemy by making much noise

C. move around to search for delicious food

D. give off harmful gas to kill the targets

4.Chicken and dogs are mentioned in Paragraph 4 to show that ________.

A. no animals can survive the poison of the golden poison frog

B. they like to wander along the path of the golden poison frog

C. the golden poison frog likes eating them most

D. the poison of the golden poison frog is deadly

---We ______gas. I’m afraid we can’t go much further.

--- I know there’s a gas station ahead. Sure it will last us until we get there.

A．are running out B．have run out

C．are running out of D．have run out of

--We ______gas. I’m afraid we can’t go much further.

--- I know there’s a gas station ahead. Sure it will last us until we get there.

A.are running out　　　 B.have run out　　 C.are running out of　 D.have run out of

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