If English means endless new words， difficult grammar and sometimes strange pronunciation， you are wrong. Haven’t you noticed that you have become smarter since you started to learn a language？
According to a new study by a British university， learning a second language can lead to an increase in your brain power. Researchers found that learning other languages changes grey matter. This is the area of the brain which processes information. It is similar to the way that exercise builds muscles.
The study also found the effect is greater， the younger people learn a second language.
A team led by Dr Andrea Mechelli， from University College London， took a group of Britons who only spoke English. They were compared with a group of “early bilinguals ” who had learnt a second language before the age of five， as well as a number of later learners. Scans showed that grey matter density （密度） in the brain was greater in bilinguals than in people without a second language. But the longer a person waited before mastering a new language， the smaller the difference.
“Our findings suggest that the structure of the brain is changed by the experience of learning a second language，” said the scientists.
It means that the change itself increases the ability to learn.
Professor Dylan Vaughan Jones of the University of Wales， has researched the link between bilingualism and maths skills. “Having two languages gives you two windows on the world and makes the brain more flexible （灵活的），” he said. “You are actually going beyond language and have a better understanding of different ideas.”
The findings were matched in a study of native Italian speakers who had learned English as a second language between the ages of two and 34. Reading， writing， and comprehension were all tested. The results showed that the younger they started to learn， the better. “Studying a language means you get an entrance to another world，” explained the scientists.
36. The main subject talked about in this passage is__________.
A. science on learning a second language
B. man’s ability of learning a second language
C. that language can help brain power
D. language learning and maths study
37. In the second paragraph， the writer mentions “exercise” in order to__________.
A. say language is also a kind of physical labor
B. prove that one needs more practice when he （she） is learning a language
C. to show the importance of using the language when you learn the language
D. make people believe language learning helps grey matter work well
38. The underlined word “bilingual” probably means__________.
A. a researcher on language learning
B. a person who is good at learning foreign languages
C. a person who can speak two languages
D. an active language learner
Boston school officials plan to notify parents at four schools that their children may have drunk water tainted with lead from drinking fountains that were mistakenly turned on before water testing was complete.
The fountains were active for as little as several hours to as long as three weeks.
Boston Public Schools recently launched a $300，000 project to repair and upgrade plumbing （管道系統） so that fountain water could be restored at six buildings that had been using bottled water.
The facilities were selected for the pilot program because prior tests indicated lead levels that were below state and federal standards， school officials said.
However， testing conducted in recent months found elevated lead levels in at least one fountain at four of the six schools， namely Mather Elementary School in Dorchester， Lee K8 School in Dorchester， Curley K8 School in Jamaica Plain， Another Course to College in Brighton. Lead contamination was also found at a fifth school， but officials don’t believe anyone drank from the fountains.
School officials had previously told The Globe that none of the new fountains had been turned on since being installed. But they had learned in recent days that the fountains had been mistakenly activated， they said Wednesday.
Officials blamed a lack of communication between employees of the school district’s facilities department and a thirdparty contractor.
The fountains are now shut off in all six schools. Bottled water is being provided there instead， officials said.
The four schools where children may have drunk water with high lead levels are： Mather Elementary School， Lee K8 School， Curley K8 School， and Another Course to College.
“BPS is communicating with families at the schools about these circumstances and their options if they are concerned about potential exposure to lead in drinking water，” said a statement from Boston Public Schools.
School officials said automated phone calls were to be made to families at the affected schools Thursday afternoon and that letters would also be mailed home.
In the meantime， school officials continue to investigate why water from the new fountains has high lead levels， a process that may cause the project to run over budget.
Officials had hoped the new fountains would produce longterm savings by allowing the schools to drop their costly reliance on bottled water. Most Boston schools use bottled water because of past lead concerns. The city expects to spend $415，000 this school year alone to provide bottled water.
Four other schools that were still using tap water were recently found to have high lead levels in fountains. The affected fountains were shut off and replaced with bottled water.
Children are particularly vulnerable when it comes to lead. Exposure has been linked to IQ deficits， shortened attention spans， behavioral problems， hearing damage， stunted growth， and lowered birth weight.
Officials said they were also contacting parents at Trotter Innovation School in Dorchester and Boston Green Academy in Brighton， the two other schools in the fountain restoration project.
At Trotter， high lead levels were found， but officials believe no one drank from the fountains. At Boston Green Academy all six fountains tested had lead levels below the state’s standards.
39. Which of the following is TRUE according to the passage？
A. The fountains involved in the incident are now no longer in use.
B. None of those newlyinstalled fountains have yet been turned on so far.
C. Long term exposure to high lead levels can damage one’s immune system.
D. Fountains tested in all six schools had lead levels above state standards.
40. According to the passage， what will make the project overspend budget money？
A. To find out actual causes of high lead levels
B. To launch and upgrade plumbing in schools
C. To have fountains replaced with bottled water
D. To pay health services staff to answer questions
41. The officials had fountain restoration project carried out for the purpose of__________.
A. boycotting bottled water
B. lowering lead levels
C. using new fountains
D. cutting expenses
42. The passage is written mainly to__________.
A. disclose the problem of high leadlevel fountain water
B. warn kids of potential danger of drinking fountain water
C. report leadaffected water found at Boston schools
D. urge official to accelerate the fountain restoration project
Why are some people better able to fight off the flu than others？ Part of the answer， according to a new study， is related to the first flu strain we encounter in childhood.
Scientists from UCLA and the University of Arizona have found that people’s ability to fight off the flu virus is determined not only by the sub types of flu they have had throughout their lives， but also by the sequence （順序） in which they have been infected by those viruses. Their study was published in the openaccess journal PLoS Pathogens. The research offers an explanation for why some people become much worse than others when infected with the same strain of the flu virus.
In addition， UCLA scientists， including Professor James LloydSmith， who was also a senior author of the PLoS Pathogens research， recently completed a study that analyzed travelrelated screening for the novel coronavirus （冠状病毒） 2019nCoV. The researchers reported that screening travelers is not very effective for the 2019 coronavirus—that it will catch less than half of infected travelers， on average—and that most infected travelers are undetectable， meaning that they have no symptoms yet， and are unaware that they have been exposed. So stopping the spread of the virus is not simply a matter of enhancing screening methods at airports and other travel centers.
“This puts the onus （职责） on government officials and public health officials to follow up with travelers after they arrive， to isolate them and trace their contacts if they get sick later，” said LloydSmith， a UCLA professor of ecology and evolutionary biology. “Many governments have started to impose quarantines （隔离）， or even travel bans， as they realize that screening is not sufficient to stop the spread of the coronavirus.”
One major concern， LloydSmith said is that other countries， especially developing nations， lack the infrastructure and resources for those measures， and are therefore vulnerable to importing the disease. “Much of the public health world is very concerned about the virus being introduced into Africa or India， where large populations exist that do not have access to advanced medical care，” he said.
43. What is the significance of the scientists’ research？
A. It explains the cause of the flu virus.
B. It reduces the risk of people being infected.
C. It analyzes people’s ability to fight off the virus.
D. It stops the spread of the flu virus all around the world.
44. What do we know about the novel coronavirus from Paragraph 3？
A. Travelers are at high risk of being exposed to it.
B. It is more difficult to stop its spread than expected.
C. Most travelers infected with it are detected by screening.
D. It spreads especially quickly at airports and railway stations.
45. Why does the writer mention LloydSmith’s words in Paragraph 4？
A. To persuade people not to travel.
B. To provide a method to kill the virus.
C. To show the harmful effects of the virus.
D. To stress the responsibilities of officials.
46. Which of the following best explains the underlined word “vulnerable” in the last paragraph？
A. Easy. B. Impossible.
C. Responsible. D. Indifferent.
Having driven almost thirty hours， I decided to stay in South Carolina for a few days. The next morning， I purchased a threeday fishing license and bait （餌料） before heading to the lake.
Opening my trunk， I carefully took out my fishing gear （用具）， put it on the lake’s edge， baited up and began to fish.
“Good morning，” said someone， walking up from behind me.
Turning around， I saw a game warden （猎场管理员） with a clipboard.
“Good morning，” I said， nodding my head.
“Catch any fish？” he asked.
“No sir， just relaxing and killing time.”
“Can I see your fishing license？”
I handed him the license I had purchased at the bait shop.
“Can I see your driver’s license， too？” he requested.
“I see the name on the driver’s license is spelled Kiser and the name on the fishing license is Kaiser，” said the warden.
“The gentleman at the bait shop must have written it wrong，” I told him.
“Well， I’m afraid I’ll have to write you up for fishing with an invalid license and take away your fishing gear.”
“You’ve got to be kidding，” I responded， with a surprised look on my face.
Sure enough I was written up and my fishing gear taken away. I was told that I would have to pay a fine and that my stuff would be sold at auction.
I stood there almost in tears as he drove away. Those rods and reels were very special to me. I had used them over twenty years， fishing with my friends， who were now all dead.
After returning home in Georgia， I telephoned South Carolina trying to explain the situation， but no one would listen. I was told that the Department of Fish and Game had a “zero tolerance” for fishing and hunting violations. Finally， in tears I paid the fine and gave up the fight.
Nine months later， I received a letter. I had no idea who it was from as there was no return address. On a plain piece of notebook paper was written “Auction for the Department of Fish and Game held this Saturday at 11 ： 00 am”.
On Saturday， at six in the morning I headed to South Carolina. By ten o’clock I had found the auction. There were numerous boats and piles upon piles of fishing equipment. All at once， there it was—my wonderful stuff all thrown in a pile as if it was worth nothing.
As the auction began I took my seat. In my wallet was twentyseven dollars. For more than an hour I waited for my property to be brought to the auction block.
“We have three rods and reels here. I guess we will sell this as a unit，” said the auctioneer.
“50 dollars，” yelled someone in the crowd.
“51 dollars，” yelled another man.
I rose from my seat and walked out of the auction.
“66 dollars，” I heard as the bidding continued.
“100 dollars，” came another bid. The auction became silent.
“100 dollars once， 100 dollars twice， 100 dollars three times. Sold for 100 dollars，” went the auctioneer.
I walked to my truck， got in and just sat there. Suddenly I heard something hit the side of my truck. Turning around， I saw the back of a man putting my three rods and reels into my truck. It was the same game warden who wrote me the ticket almost a year ago！
As I got out of the truck he stuck out his hand and said， “I wasn’t wrong. It’s the law th at is wrong. ”
I shook his hand， thanked him and drove away. I cried as I crossed the South Carolina Georgia state line.
47. The game warden asked the writer for his driving license to__________.
A. check if his name was correctly spelled
B. make sure he had his own driving license
C. find out if his fishing license was valid
D. find an excuse to take away his fishing gear
48. How did the writer feel after he telephoned South Carolina？
A. Embarrassed. B. Astonished.
C. Disappointed. D. Puzzled.
49. Who wrote a letter to the writer telling him about the auction？
A. The Department of Fish and Game.
B. The game warden.
C. A person unmentioned in the passage.
D. The auction organizers.
50. What did the game warden mean by saying “It’s the law that is wrong”？
A. It didn’t make any sense to prohibit people from fishing freely in South Carolina.
B. The writer did break the law by fishing with an invalid license whatever the reason.
C. The writer should have been allowed a chance to explain and get his things back.
D. The auction should not have been held to sell the boats and fishing equipment.