(Question)
There is a lot of misunderstanding about studying. Most students have not been taught the principles behind really effective working. Imagine a graph showing the amount a person learns against the number of hours he works in a day. If he doesn't do any work, he learns nothing (point 0). If he does an hour's work he learns a certain amount (point 1). If he does two hours' work he learns about twice as much (point 2). If he does more work he'll learn still more (point 3). However, if he tries to do twenty-three and a half hours' work in a day, he will be so tired that he'll hardly remember anything: what he learns will be very little (point 4). If he did less work he'd learn more (point 5). Now whatever the exact shape of the graph's curve , made by joining these points, it must have a high point. Point "X" is the very maximum anyone can learn in the day. And this represents the optimum , the best, amount of work to do. It is the best possible compromise between adequate time at the books and fatigue . Fatigue is an absolutely real thing; one can't escape it or ignore it. If you try to ignore it and press yourself to work past the optimum, you will only get on this downward slope and achieve less than the best - and then become very tired and lose your power of concentration. The skill in being a student consists of getting one's daily study as near the optimum point as possible. I cannot tell you what the optimum is. It differs with the type of work, it differs from person to person, and even in the same person it varies from week to week. You must try to find your own. Every day you study, bear this principle of the optimum in mind. When you feel yourself getting fatigued, if you find yourself reading the same paragraph over and over again and not taking it in, that's a pretty good sign you've reached your highest point for the day and should stop. Most ordinary students find their optimum at five hours a day. Yours may be a little more or a little less - but if you get in five hours' good work a day, you... The passage tells us that a person's optimum number of working hours   _  . A) follows a regular pattern with each individual B) changes regularly from week to week C) can be partly determined by the sort of work he is doing D) should be determined before he gets too tired
(Answer)
C


(Question)
Below are some tips for women traveling alone.  Exercise hotel safety There are many ways you can make a solo stay at a hotel safer. At cheek-in, you might consider asking for a room near the elevator so you won't need to walk down long, potentially ill-lit hallways to reach your room. When filling out guest registration forms, consider using your first initial instead of your name, and skip the" Mrs/Miss/Mr" check box. Additionally, make sure the clerk writes down your room number instead of saying it out loud. This will prevent anyone nearby from knowing where to find you later. Arrive during the day Arrive in new cities during the day. Areas around bus and train stations can be scary and/ojr deserted, and small towns tend to shut down early. Veteran solo traveler Mara Rothman of San Francisco notes that plenty of beautiful towns can appear mysterious at night, and locals who are genuinely trying to help you can appear unnecessarily threatening. Arriving during the day means you'll be able to find a place to stay and get to know where you are before dark. Keep your documents safe  If you choose to wear a money belt, use it for storage and not as a purse. Constantly reaching under your shirt for money draws attention to it, and tends to defeat the purpose. Instead,keep your passport, extra stores of money, and other important documents well hidden, and use a bag or purse for carrying daily spending money. Dress appropriately To avoid attracting unwanted attention, dress as conservatively as the women you see around you. This doesn't necessarily mean wearing the traditional dress, as that can sometimes have the opposite result. A good rule of thumb is to dress modestly. Think knee-length or longer skirts. Bare arms, shoulders, and legs are considered risked in some countries, so do the research before you go and once you're there. Note which body parts the local women cover and do the same.  Know when to make friends  Traveling alone doesn't always mean being alone. There are plenty of situations in which... Mara Rothman,s notes are mentioned in order to  _  . A) build up her reputation B) show admiration for her. C) compare the experience D) make the tip convincing
(Answer)
D


(Question)
It seems some people have something bad to say about Facebook, the social media website that now has attracted more than 300 million members. To them I have only this to say: Stop please! A recent article in theWall Street Journalblamed Facebook's ability to ruin friendships, saying that it limits communication to typing and encourages people to spend far too much time with friends they have never met. Having used Facebook since its first year, I find these arguments false. The simple truth is that the problems are only a symptom of Facebook abuse. Like many things, it is only as harmful to your life and relationships as you allow it to be. Consider arguments against watching too much TV and overeating. Try using Facebook to find friends who may have long ago changed their e-mail addresses and phone numbers, to find out what your old college friends are up to, to congratulate your friends on their latest birthdays, to share pictures and articles you find interesting, and to join in the discussion about them with your friends. Sure, I had days when I wasted a little more time on Facebook than I should, but I'm not going to blame Facebook for my own laziness. If Facebook wasn't there, I would have found something else to waste time on. To my "friends": if you don't feel like broadcasting your life stories on your Facebook, don't. If you tire of my personal updates, ignore them. If you don't want to join in the popular online games, don't. It is a fun tool at your fingers that can be used for both good and bad. If you don't like using Facebook, don't. I am now a consultant at the Department of State. I use Facebook to keep in touch with friends, family, and colleagues who live and work all over the world. Why did the article in theWall Street Journal blame Facebook? A) Because it makes people spend too much time online. B) Because it can make people lose their real-life friends. C) Because it is as harmful to people's lives as watching TV. D) Because it encourages people to make friends with strangers.
(Answer)

B