2．Climate change has caused a rise in sea levels．This has increased the amount of salt in fresh wate——青夏教育精英家教网—

2．Climate change has caused a rise in sea levels．This has increased the amount of salt in fresh water used on coastal farms．As a result farmers are increasingly unable to use fields close to the sea．
Scientists call this process"salinization．"（盐碱化）But a farmer in the Netherlands is now using a mixture of sea and fresh water to grow healthy and tasty vegetables．Marc Van Rijsselberghe started with an experiment．He put several kinds of plants in saline．
"We put a lot of plants in the fields and then we put them in fresh water and in sea water，and then we see which variety is surviving and which variety is dying．"
Mr．Van Rijsselberghe worked on the project with scientists from the Free University of Amsterdam．He divided a farm into eight irrigated areas．Separate pipes pumped fresh and sea water，and a computer program created water with eight levels of salinity．Computerized measuring devices called"sensors"controlled the water levels and the levels of salinity．Mr．Van Rijsselberghe says he was able to harvest vegetables from most of the eight test areas．He says the vegetables were smaller than those grown in fresh water．But he says they also have more sugar and salt，so they taste better．
The farmer grew carrots，cabbage，onions and beetroot．But he found that potatoes grew better than the other vegetables in the combination of sea and fresh water．Mr．Van Rijsselberghe says four kinds of these potatoes were recently sent to Pakistan，where thousands of hectares of land have been damaged by salinization．Farmers in Pakistan will test the Dutch potatoes to see if they can be grown in those fields．

28．What's the purpose of the author mentioning the climate change in the first paragraph？B
A．To show the reason for a rise in sea levels．
B．To introduce the topic of the passage．
C．To tell readers the amount of salt in sea water has increased．
D．To tell readers that farmers are unable to use fields close to the sea．
29．What's"salinization"？D
A．There is much salt in fresh water．
B．There is the most salt in fresh water．
C．There is less salt in fresh water．
D．There is more and more salt in fresh water．
30．From the passage we can learn thatD．
A．Marc conducts the experiment all by himself
B．the vegetables have more salt than sugar
C．carrots grow well，as was expected
D．the experiment is to find out which variety is more suitable for sea water
31．Why were potatoes recently sent to Pakistan？B
A．Because Pakistan lacks potatoes．
B．Because Pakistan has also been damaged by salinization．
C．Because potatoes are in great demand in Pakistan．
D．Because the people in Pakistan like eating more potatoes．

1．Electrical Fire Safety TipsOn any given day，it's likely that most people use several different electrical devices（装置）．With electric devices being so common in modern homes，it's easy to forget that there are very real risks and angers associated with their use．Take the time to go over the rules of safe operation and make sure that everyone in your home is aware of them in order to prevent unnecessary exposure to harms and safety risks．
When an electrical short or spark does happen，it is very important to understand what to do to prevent or put out an electrical fire to keep the damage from spreading．You should，of course，call 911or other appropriate emergency services immediately in case of electrical injury or fire．The United States Fire Administration （USFA） of the Federal Emergency Management Agency （FEMA） offers a number of tips for preventing electrical fires．
◎Do not allow children to play close to small or large electrical devices．
◎Replace any tools that send out even slight electric shocks．
◎Replace any light switches that have a tendency to flash．
◎Replace any light switches that are hot to the touch．
◎Avoid overloading extension cords，sockets and plugs．
◎Do not force a three-prong plug into a two-receptacle socket．
◎Know where fuse（保险丝）boxes and circuit（电路）breakers are located as well as how to properly operate them．
◎Never attempt electrical repairs or rewiring'without proper Certification and experience．
◎Do not put water on an electrical fire； use a dry fire extinguisher（灭火器）or baking soda instead．
Even though electricity is ordinary，there is still quite a bit of danger associated with improper use．Carefully observe all safety measures when using electricity to keep yourself and your family safe．

21．Why is it easy to ignore the dangers of electricity？B
A．It is safe enough at homes．
B．People are too familiar with it．
C．People know well how to use it．
D．Few people know the safe rules．
22．What does Paragraph 2 mainly talk about？D
A．What to do to keep your home safe．
B．When to call a fire station for help．
C．How to avoid electricity failures at home．
D．How to deal with electricity failures correctly．
23．When should you change your switch for a new one？A
A．It feels hot．
B．It is at the reach of your kid．
C．It is not the most advanced one．
D．It doesn't have a long power line．

20．那位女士生了三个小孩．
The womangavebirthto three children．

19．He refused to compete on Sundays because of his religious（宗教的）belief．

18．Oil will float（漂浮）on the surface of water．

17．If you combine（结合）your knowledge with my experience，we are sure to succeed．

16．The girl as well as the boysis learning （learn） to drive a car now．

15．Hereare some envelopes and paper for you．

14．

Families can be made up of all kinds of different people（or in this case，fish）．That's the big idea behind the recently-released movie，Finding Dory．
Finding Dory is the sequel（续集）to the very popular movie Finding Nemo，which came out 14 years ago．Both are cartoon movies．
In Finding Dory，a forgetful blue fish named Dory becomes lost，and must be reunited with special people in her life．likeable Dory has short-term memory loss，which means that she can remember things that happened a long time ago，but can't remember things that just happened．It's a condition that causes trouble when she becomes lost，because she has trouble remembering directions like"turn left and then right．"Thanks to her good friends like the fish named Nemo，and his father，Marlin，she finally finds her way back．
Finding Dory is a beautifully drawn film that is attractive to look at．And，although the title gives away some of the plot（情节），there are enough turns throughout the movie to make it interesting．
Much of the film takes place out of water---in a marine wildlife centre and even on a highway-so the filmmakers had to be very creative about finding ways for the fish to move from place to place．At one point，Dory is in a coffee pot full of water，carried by a very clever octopus（章鱼）．
Finding Dory has been very popular with audiences since it opened on June 8，2016．In fact，it has already made $136.2 million in ticket sales．
The characters in the film were"voiced"by popular actors including Ellen DeGeneres（a talk-show host） as Dory and Ty Burrell （Phil Dunphy on TV's Modern Family） as a Beluga whale．
Ellen DeGeneres has waited a"long，long，long，long，long，long time"for the next film in the Nemo series．She said in a media release from the film's creators，Disney/Pixar，"It's got a lot of heart，and it's really funny．"

25．What is the purpose of the passage？B
A．To tell the readers about Dory
B．To introduce a film to the readers
C．To describe the plot of Finding Dory
D．To make a comparison between Finding Nemo and Finding Dory
26．Which statement is TRUE about Dory according to the passage？A
A．Dory becomes lost because of her memory loss
B．Dory's father，Marlin，helps her find her way back
C．Dory like to move from place to place
D．Dory's home is a coffee pot full of water
27．Finding Dory is popular with audiences mainly becauseC．
A．it's about a forgetful blue fish
B．it's the sequel to the movie Finding Nemo
C．it's a beautifully drawn film with many turns in it
D．the characters in the film were"voiced"by popular actors．

13．So，it is necessary to take severalmeasures/steps（措施）to strengthen librarians'ability in order to make the research go smoothly．

0 142982 142990 142996 143000 143006 143008 143012 143018 143020 143026 143032 143036 143038 143042 143048 143050 143056 143060 143062 143066 143068 143072 143074 143076 143077 143078 143080 143081 143082 143084 143086 143090 143092 143096 143098 143102 143108 143110 143116 143120 143122 143126 143132 143138 143140 143146 143150 143152 143158 143162 143168 143176 151629

试题分类