Researchers are using an underwater drone (无人机) to get information on carbon dioxide (CO₂) levels in the ocean. It is believed to be the first time that such a device (装置) has been used purposely to test CO₂ levels.
The device, which the team also calls a glider, is designed to go down to 1,000 meters in deep ocean areas and can operate for weeks at a time.
The purpose of the research is to provide scientists with data (数据) about how climate change is influencing the ocean’s chemistry. The self-swimming drone was placed in the Gulf of Alaska this spring. Reporters from The Associated Press recently joined researchers on a boat in Alaska’s Resurrection Bay to see the drone in action.
The team says the project could be a major step forward in measuring(测量) the environmental health of oceans. The scientists are most interested in levels of ocean acidification(酸性). This happens when CO₂ emissions(排放) in the air make their way into the ocean. Ocean acidification can harm or kill some kinds of sea life.
Scientists have connected CO₂ emissions with global(全球) warming caused by human activities.
In a way, oceans have given humans a helping hand by taking in(吸收) some of the CO₂. If there were no oceans’ uptake, there would be much more CO₂ in the air. This would trap more of the sun’s heat and further warm the Earth.
“But the problem now is that the ocean is changing its chemistry because of this uptake,” said team member Claudine Hauri.
One of the best ways to measure ocean acidification is to collect CO₂ measurements. Until now, these collections were mostly done from ships or with devices floating at the ocean surface or on the ocean floor.
(1). What is probably this passage?
| A． |
An advertisement. |
B． |
Part of a news report. |
| C． |
Part of a science fiction. |
D． |
A text from a chemistry textbook. |
(2). What do we know about a glider?
| A． |
It must be used together with floating devices. |
| B． |
It is used to measure ocean acidification. |
| C． |
It is used to stop CO₂ from entering the ocean. |
| D． |
It is used to measure CO₂ levels in the air. |
(3). What does the underlined word “uptake” in Paragraph 6 most probably mean?
| A． |
The act of covering an area. |
B． |
The act of slowing something down. |
| C． |
The act of taking something in. |
D． |
The act of killing or harming something. |
(4). What is troubling the scientists?
| A． |
The underwater drone can’t swim by itself. |
| B． |
The drone can only last one week at a time. |
| C． |
Oceans are stopping taking in CO₂from the air. |
| D． |
Too much CO₂ is making its way into oceans. |
Many people have to work on the weekend. Some people do not mind. Others think it is terrible.
One man thinks that working on the weekend can be dangerous. He is Graham Coates. Mr Coates works in an office in Brighton, England.
On Saturday, May 24, 1986, he went to the office to do some work. When he got on the lift(电梯), it stopped between floors. Mr Coates could not get out of the lift. He started to shout, but no one heard him. Then Mr. Coats remembered that it was a holiday in England. No one was going to come to work until Tuesday.
There was nothing for him to do. He had to wait until one of his workmates came to work and found him. With nothing to eat or drink, Mr Coats ended up sleeping for most of the day.
Now Mr. Coates says, "I only use lifts if they have telephones in them."Mr. Coates thinks working on the weekend is_____.
| A．interesting | B．terrible | C．happy | D．unhappy |
Mr. Coates stayed in the lift for_____.
| A．about twenty hours | B．nearly two days |
| C．one week | D．more than sixty hours |
When Mr. Coates got out of the lift he_____.
| A．was cold, weak, hungry and tired |
| B．wouldn't work there any more |
| C．said "I only use lifts if they have telephones in them." |
| D．went home at once |
Why could Mr. Coates not get out of the lift? Because _____.
| A．it was broken | B．it was the weekend |
| C．it was in an office | D．it was a holiday |
In the lift, there was_________.
| A．water | B．beer | C．telephone | D．nothing |
British English and American English
A student is studying British English. He wonders: Can I have a talk with Americans? Can they catch me? Learners of English often ask--what are the differences between British English and American English? How important are these differences?
Certainly, there are some differences between British English and American English. There are a few differences in grammar（语法）. For example, speakers of British English say “in hospital” and “Have you a pen?” Americans “in the hospital” and “Do you have a pen?” Pronunciation (发音) is sometimes different. Americans usually sound the “r” in words like “car”and “farm”. Some speakers of British English do not sound the “r” in these words. There are differences between British English and American English in spelling and vocabulary. For example, “colour”and “honour” are British English spellings. “Color” and “honor” are American English spellings.
These differences are in grammar, pronunciation, spelling and vocabulary. However, they are not important. For the most part, British English and American English are the same language.In American English, we can say, “? ”
| A．Have you a new book |
| B．Do you have a new book |
| C．Are you have a new book |
| D．Can you to have a new book |
Between British English and American English, sometimes pronunciation is .
| A．poor | B．different | C．high | D．short |
In American English, the word “favourite”can be spelt.
| A．favoruite | B．favurite | C．favorite | D．favrite |
Englishmen say “in hospital”, while Americans say .
| A．at the hospital | B．in the hospital |
| C．by hospital | D．to hospital |
The main idea of the passage is that .
| A．there are no differences between British English and American English |
| B．British English and American English are two different languages |
| C．speakers of British English and American English speak the same language |
| D．we shouldn't speak English |
If you are riding a bike in foreign countries, you need to know what these traffic signs mean.
| 1 |
 |
This sign means “walk”, you can cross the street along with other people. |
| 2 |
 |
This sign is the “don’t walk” sign. It means you should stop to wait for a while until the sign of “walk” is showing. |
| 3 |
 |
This sign means that there is a bike lane. If you see such a sign, you must use the bike lane. |
| 4 |
 |
Car drivers and bike riders must come to a complete stop at “STOP” signs. |
| 5 |
 |
This sign means you are coming to a zebra crossing. You must slow down to allow people in the zebra crossing to cross the street. |
| 6 |
 |
This sign means parts of the road are rough. Be careful! Rough roads make you fall off your bike. |
Which of the following signs means “walk”?
A． |
B． |
C． |
D． |
What should bike riders do when they see the sign
?
| A．To ride against traffic. |
| B．To ride on the left side of the road. |
| C．To ride on the bike lane. |
| D．To ride on the right side of the road. |
Which of the following sign has the same meaning as the sign
?
A． |
B． |
C． |
D． |
In order to know a foreign language thoroughly, four things are necessary. Firstly, we must be able to understand the language when we hear it spoken. Secondly, we must be able to speak it ourselves, correctly, with confidence and without hesitation. Thirdly, we must be able to read the language and fourthly, we must be able to write it. We must be able to compose（组成）sentences that are grammatically correct. We must know how to arrange sentences in paragraphs, so as to write a good letter or composition.
There is no easy way to succeed in language learning. A good memory is of great help, but it is not enough simply to memorize rules from a grammar book. It is not much use learning by heart long lists of words and their meaning. We learn words not by ourselves, but in sentences. We must learn by using the language. “Learn through use” is a good piece of advice for those who are studying a new language. Practice is very important. We must practice speaking and writing the language whenever we can.The word “confidence” here probably means _____.
| A．use | B．eyes |
| C．need | D．feeling sure of ourselves |
The writer advises us to _______.
| A．speak more and write more |
| B．read more |
| C．speak more |
| D．use a dictionary |
The first step in learning a language is ______.
| A．reading | B．speaking | C．writing | D．listening |
Words should be learned _____.
| A．from a dictionary | B．from a textbook |
| C．in sentences | D．from a good grammar book |
“Learn through use “is to say that ______.
| A．we must practise speaking and writing |
| B．we must learn by using the language |
| C．we must learn everything by language |
| D．we must remember grammar rules as many as possible |
Almost every Chinese person can recite(背诵) the two lines of the famous poem, “Every grain on the plate comes from hard work ”. But sadly, many of us don’t actually get the real meaning of these lines: Don’t waste food.
A CCTV program reported that the food Chinese people throw away every year is enough to feed 200 million people for a year. Do we have too much food? Absolutely not. According to the UN World Food Program, there were 925 million hungry people around the world in 2011, especially in developing countries. Six million children die of hunger every year.
Chinese people are well-known for being friendly and generous. Many even feel that they lose face if their guests have eaten all the food on the table. Luckily, a number of people have realized the importance of saving food. What should we do in our daily lives to waste less food?
1. Don’t order too much in a restaurant. Only order as much as you want to eat. If you cannot eat all the food you ordered, take the rest of it home.
2. Don’t leave any food in your bowls while having meals.
3. Keep an eye on what food you have at home. Don’t buy too much, especially for vegetables and fruit.What’s the real meaning of the underlined sentence?
| A．春种一粒粟，秋收万颗籽。 | B．谁知盘中餐，粒粒皆辛苦。 |
| C．吏禄三百石，岁晏有余粮。 | D．足蒸暑土气，背灼炎天光。 |
According to the UN report, how many hungry people were there in 2011?
| A．6 million. | B．925 million. | C．200 million. | D．725 million. |
What should we do to waste less food?
| A．Order more food in a restaurant. |
| B．Every time you eat, leave some food in your bowls. |
| C．Take all the food you ordered home. |
| D．Don’t store too much food like vegetables and fruit. |
Which of the following is NOT true?
| A．A number of people have realized the importance of saving food. |
| B．The food Chinese people throw away every year is enough to feed 200 million people for a year. |
| C．200 million children die of hunger every year. |
| D．Many Chinese feel that they lose face if guests have eaten all the food on the table. |
What’s the main idea of this passage?
| A．Don’t waste food. |
| B．Chinese people are friendly and generous. |
| C．We can’t die of hunger. |
| D．Every grain is grown by farmers. |