Question: Read the article and select the best answer. Article: Cholera is a water-borne disease that is spread through polluted water and food. Cholera is an illness caused by the bacterium. It produces a poison that causes a painless , watery diarrhea( ) that can quickly lead to severe dehydration and death if treatment is not given. Most persons infected with cholera do not become ill, although the bacterium is present in their waste for 7-14 days. When this illness does strike, more than 90% of the time is not severe and is difficult to tell from other types of diarrhea. Less than 10% of sick persons develop cholera with signs of moderate or severe dehydration. A person may get cholera by drinking water or eating food polluted with the cholera bacterium. The disease can spread rapidly in areas without the proper treatment of drinking water. The cholera bacterium may also live in the environment in dirty rivers and coastal waters. Shellfish eaten raw have been a source of cholera. Therefore, the disease is not likely to spread directly from one person to another. Cholera can be simply and successfully treated by immediate replacement of the fluid and salts lost through diarrhea. Patients can be treated by being given a mixture of sugar and salt to be mixed with water and drunk in large amount. Antibiotics shorten the course and decrease the severity of the illness. To avoid cholera, we should eat well-cooked food instead of raw food. Question: Cholera can be treated by _ . Options: A: replacing the blood in the body. B: eating a lot of water mixed with sugar and salt and using antibiotics. C: eating a large amount of sugar and salt D: drinking a lot of water and eating a large amount of food.
Answer: B

Question: Read the article and select the best answer. Article: Password strength has been a topic about the Internet lately. I have seen lots of clever methods for generating and remembering strong passwords. Some are better than others, but in my opinion , none are adequate . Here's the problem : it doesn't matter how strong your passwords are if you use the same one on multiple sites. All it takes is for a site to get hacked , like Gawker media, or even Sony did , and now your super-strong password has been stolen , and every site on which you used that password has been accessed . So, the bottom line is that no matter how strong your passwords are , and no matter what clever tricks you use to help you remember them , if you surf the Internet often , the only truly secure password system is what you need . Enter LastPass. It's not the only password manager out there, but I like it the best. You create ONE strong password that you have to memorize and use it to access your LastPass database . The LastPass database is stored online, on LastPass's servers. LastPass recognizes the site you're on and automatically logs you in (after , optionally , asking you to re-enter your master password). LastPass also has automatic form fill and automatic password generation. This means that you can have a different , unique , very strong password for every site you log into , but you only have to remember one master password . It's the best of both worlds. One argument against LastPass is that if their database is attacked , then all of your sites are in danger, and that's true, but given that their entire line of work is keeping that information safe , I'm willing to take that chance. The alternative is rolling dice or picking phrase to create passwords, writing all of them down on a piece of paper or something , and then having to manually type them in when I go to a site . A terrible mess. There is a free version of LastPass , with additional features unlocked if you pay $ 12 for a year's subscription . ----Joshua Bardwell Question: Joshua Bardwell writes the passage to _ . Options: A: share his experience B: introduce a product of good quality C: advertise his product D: teach how to use a new product
Answer: B

Question: Read the article and select the best answer. Article: For many businessmen online education has been a dream. Now it has come true. The investment in higher education, whether financial or in terms of time, has long been impossible for many of them. But well-known educational institutions have chosen to deliver an internet-based program, and these barriers have been lifted. That is good news for people eager to improve themselves and is more attractive to employers. It is also a benefit to industry with better qualified candidates applying for jobs at every level. Having the benefits of a higher qualification without going to the university campus is attractive to many students. Campus study means greater cost, while online programs are flexible and save time, whether at home or at work. Students can achieve their degrees without causing too much _ to their career or home life. In addition to affordable, flexible classes and greater convenience, students also have access to the online learning resources of many of the world's top educational institutions. They can also communicate with their tutors no matter what time it is or whether either party is away for any reason. This has opened up the possibility of getting a qualification from a university or college that many students could only have dreamed of in the past. It also allows specialists to get the precise qualifications and focus on their studies. As well as seeing the increase of applicants from lower-incomes and housewives, studying online in the US is even becoming popular with younger people of college age. Employers have become increasingly welcome and positive to online qualifications as more candidates earn them, especially if they're properly approved by the US Department of Education. US institutions have led the way in online education provision. Many top US colleges and universities offer a range of online programs that are highly respected and in every way perfectly fit for adults who need to combine their studies with a working life. Question: Why do people choose online education? Options: A: They can find jobs more easily than on-campus graduates. B: They can get qualifications from US Department of Education. C: They can invest money in different courses provided online. D: They can save money and arrange their time and courses freely.
Answer:
D