San Francisco, a leader in urban recycling, is preparing to turn dog waste into energy.

Norcal Waste System Inc., the city’s largest garbage company, plans to test collection carts(回收車)and collection bags in a city-center park which is popular with dog walkers.

A city study found that almost 4 percent of all the garbage picked up at San Francisco homes was from animal waste, Norcal Waste spokesman Robert Reid said. San Francisco has about 120,000 dogs.

“The city asked us to start a program to recycle dog waste in order to cut back adding more waste in landfills(廢渣埋填池) “,Reid said.

Dog waste will be poured into a methane digester(沼氣池),and the methane it gives off will be collected and burned to make electricity or to heat homes.

“Dogs and cats in the United States produce about 10 million tons of waste a year,” Will Brinton, an environmental scientist said.

“As much as we love them, our pets leave a lot of fertilizer behind them in yards and on the street but that can be a major source of contamination of groundwater,” Brinton said.

European cities such as Zurich, Frankfurt, Munich and Vienna are starting biology programs to turn waste into gas ,he said.

San Francisco runs a great program to recycle bottles, cars, paper and other rubbish and now two-thirds of its garbage needn’t be carried to landfills .The city’s goal is a 75 percent drop by 2010 and zero new waste in landfills by 2020.

1.San Francisco will plan to use dog waste for making __________.

A．fertilizer

B．gas

C．electricity

D．methane

2.What does the underlined word “ contamination” mean?

A．Increase

B．Reduction

C．Flow

D．Pollution

3.What can we infer from the passage?

A．San Francisco is short of electricity

B．San Francisco has done a lot of in rubbish recycling.

C．Fewer people will keep dogs as pets in San Francisco

D．There will be no rubbish by 2010 in San Francisco

4.The passage is mainly about_______.

A．San Francisco ‘s new policy for pet keepers

B．San Francisco ‘s new plan for recycling

C．how to keep a city clean

D．how to deal with rubbish

 

【答案】

1.D2.D3.B4.B

【解析】略

 

練習(xí)冊系列答案
相關(guān)習(xí)題

科目：高中英語 來源：2015屆四川省高二上學(xué)期期中考試英語試卷（解析版） 題型：閱讀理解

The year is 2094. It has been announced that a comet is heading towards the Earth. Most of it will miss our planet, but two pieces will probably hit the southern half of the Earth.

On 17 July, a piece four kilometers wide enters the Earth’s atmosphere with a massive explosion. About half of the piece is destroyed, but the remaining part hits the South Atlantic at 200 times the speed of sound. The sea boils and a huge hole is made in the sea bed. Huge waves are created and spread outwards from the hole. The wall of water, a kilometer high, rushes towards southern Africa at 800 kilometers an hour. Cities on the African coast are totally destroyed and millions of people drowned.

Before the waves reach South America, the second piece of the comet lands in Argentina. Earthquakes and volcanoes are set off in the Andes Mountains. The shock waves move north into California and all around the Pacific Ocean. The cities of Los Angeles, San Francisco and Tokyo are completely destroyed by earthquakes. Millions of people in the southern half of the Earth are already dead, but the north won’t escape for long. Because of the explosions, the sun is hidden by clouds of dust, temperatures around the world fall to almost zero. Crops are ruined. The sun won’t be seen again for many years. Wars break out as countries fight for food. A year later, no more than 10 million people remain alive.

Could it really happen? In fact, it has already happened more than once in the history of the Earth. The dinosaurs were on the Earth for over 160 million years. Then 65 million years ago they suddenly disappeared. Many scientists believe that the Earth was hit by a piece of object in space. The dinosaurs couldn’t live through the cold climate that followed and they died out. Will we meet the same end?

1.What is mainly described in the passage?

A. A historic discovery.           B. An event of imagination.

C. A research on space.           D. A scientific adventure.

2.When the first piece hits the South Atlantic, it causes      .

A. an earthquake                B. damages to cities

C. an Earth explosion            D. huge waves

3.Why can’t the northern half of the earth escape for long?

A. Because the land is covered with water.

B. Because the light and heat from the sun can not reach the Earth.

C. Because people there can not live at the temperature of zero.

D. Because wars break out among countries.

4.By giving the example of dinosaurs, the author tries to prove      .

A. animals could not live in the cold climate

B. what happened 65 million years ago was an invented story

C. the human beings will die out in 2094

D. the Earth could be hit by other objects in space

 

查看答案和解析>>

科目：高中英語 來源：2015屆云南德宏州芒市高一下學(xué)期期中考試英語卷（解析版） 題型：閱讀理解

Cancer researchers urged people on Wednesday to take more vitamin D to lower risk of cancer, saying studies showed a clear link. “Our suggestion is for people to increase their intake (吸入，攝入), through diet or a vitamin supplement,” Dr. Cedric Garland said in a telephone interview.

Garland's research team reviewed 63 studies, including several large long-term ones, on the relationship between vitamin D and certain types of cancer worldwide between 1966 and 2004. “There's nothing that has this ability to prevent cancer,” he said, urging governments and public health officials to do more to fortify (增強(qiáng)) foods with vitamin D. Garland is part of a University of California at San Diego Moores Cancer Center team that published its findings this week online in the American Journal of Public Health. Vitamin D is found in milk, as well as in some fortified orange juice, yogurt and cheeses, usually at around 100 international units（IU）a serving. “People might want to consider a vitamin supplement to raise their intake to 1000 IUs per day” Garland said, adding that it was well within the safety guidelines established by the National Academy of Sciences.

The authors said that taking more vitamin D could be especially important for people living in northern areas, which receive less vitamin D from sunshine.

“African Americans, who don't produce as much of the vitamin because of their skin colour, could also benefit significantly from a higher intake,” the authors said.

1.According to the passage, people are advised to take more Vitamin D, because__.

A．it is nutritious                          B．it can‘t harm people’s health

C．it can lower cancer risk                   D．it is not taken enough every day

2.Which of the following can not help people get more Vitamin D?

A．Have some sunshine                     B．Have more meat

C．Have more fortified cheese                D．Have a vitamin supplement

3.Which of the following food can lower people‘s chance of getting cancer?

A．Milk             B．Fortified orange juice                    C．Fortified yogurt  D．All of the above

 

查看答案和解析>>

科目：高中英語 來源：2013屆遼寧省高三上學(xué)期期中考試英語試卷（解析版） 題型：單項(xiàng)填空

 Though ________ in San Francisco, Dave Mitchell had always preferred to record the plain facts of small-town life.

A．raised

B．grown

C．developed

D．cultivated

 

查看答案和解析>>

科目：高中英語 來源：2012-2013學(xué)年天津市高三第二次月考英語試卷（帶待解） 題型：閱讀理解

Jean is a bright young lady who comes from a rich and famous family. She goes to a good university and has everything that money can buy. Well, almost everything is good. But the problem is that Jean’s family are so busy that they can hardly find time to be with her. So Jean spends a lot of time on her QQ. She likes being anonymous(匿名), talking to people who do not know about her famous family and her rich life. She uses the name Linda on QQ and has made a lot of friends who she keeps in touch with quite often.

Last year Jean made a very special friend on QQ. His name was David and lived in San Francisco. David was full of stories and jokes. He and Jean had a common interest in rock music and modern dance. So it always took them hours to talk happily on QQ and sometimes they even forgot their time. Of course, they wanted to know more about each other. David sent a picture of himself: He was a tall, good looking young man with big, happy smile. As time went by, they became good friends and often sent cards and small things to each other.

When Jean’s father told her that he was going on a business trip to San Francisco, she asked him to let her go with him so that she could give David a surprise for his birthday. She would take him the latest DVD of their favorite rock singer. But when she knocked on David’s door in San Francisco, she found that her special friend was a twelve-year-old boy named Jim!

1.Jean spends a lot of her time on QQ because she is _________.

A．rich              B．young            C．lonely            D．talkative

2.The reason why they even forgot their time is that they _________.

A．talked in delight on QQ

B．hated study

C．fell in love with each other

D．had similar hobbies

3.Why did Jean leave her home for San Francisco?

A．To amaze David.

B．To be on a business trip.

C．To be invited to Jim's birthday party.

D．To send some gifts to Jim.

4.The following states are true about Jean EXCEPT that _________ according to the passage.

A．she is a university student

B．she was born in a wealthy family

C．she made a friend named Jim younger than her

D．she uses her family name on her QQ

5.We could believe that Jean was _________ when seeing Jim himself instead of David at his door.

A．delighted          B．disappointed       C．regretful          D．confused

 

查看答案和解析>>

科目：高中英語 來源：2014屆福建省高一第四學(xué)段（期末）考試英語試卷（解析版） 題型：閱讀理解

Many people say pennies are not worth saving. After all, a penny is only worth a cent. But one unusual penny turned out to be worth a lot more when a coin collector paid $1.7 million for it earlier this month.

The coin is one of a kind. It is the only penny that the Denver mint(鑄幣廠) made out of copper, instead of steel, in 1943. Because it is unique, it is also very valuable. No penny has ever sold for so much money.

The Changing Penny

The Lincoln penny first appeared in 1909. For 34 years, the one-cent coin was made out of copper. Then, in 1943, the penny changed. World War II was going on, and copper was needed for equipment. So for one year, pennies were made out of steel instead. At least most of them were.

Only a few coins were made out of unused copper. There are three main mints, or places where coins are made, in the United States. Of the known copper pennies from 1943, twelve were made in the Philadephia mint, and five were made in the San Francisco mint. Only one was made in the Denver mint.

Nobody knows for sure why a copper penny was made at the Denver mint in 1943, coin dealers Andy Skrabalak told Time for Kids. “There is a rumor that a mint employee made the coin in the middle of the night.”

A Special Set

The coin collector who bought the $1.7 million penny wants to remain unknown. But the reason for the trade is known. He already had two copper pennies from 1943 – one from the San Francisco mint and one from the Philadephia mint. To complete the set, he needed the Denver penny. The three coins will go on display at a coin exhibition in Tampa, Florida.

The collector who sold the penny is also keeping his name a secret. It took four years to convince him to give up the rare coin. Now that he has finally donating all of the money to charity.

1.Why is the Lincoln penny worth over one million dollars?

A. Because it has a history of thirty-four years.

B. Because it was made out of a rare material.

C. Because it was made on one night of 1943 by the Denver mint.

D, Because it was the only coin Denver mint made out of copper in 1943.

2.Before the Lincoln penny was sold, people thought one-cent coins __________.

A．were worth collecting for selling later

B．were surely valuable if not made out of steel

C．wouldn’t be sold for large amounts of money

D．were only useful for some coin museums

3.At least how many copper coins were made in 1943?

A．Five

B．Twelve

C．Seventeen

D．Eighteen

4.What can we learn about the collector who sold the penny?

A．He already had two copper pennies from 1943.

B．He wanted to complete the set of copper pennies.

C．He didn’t want to sell his penny in the beginning.

D．He was a well-known coin dealer in Tampa, Horida.

 

查看答案和解析>>

同步練習(xí)冊答案