C
I'm really nervous opening Chatroulette （a website）．I don't know if I'm more scared of the possibility of coming face-to-face with a naked （裸体的） guy doing improper things, or the possibility of having to speak to someone normal．But it's that uncertainty that's caused the "game" to explode into an Internet phenomenon．
So, I hesitantly click "play"．My face appears in a small box to the left of the screen．I'm a 22-year-old guy, wearing jeans and a T-shirt, and sitting in my warmly lit bedroom —not too threatening, I think．Believing I look welcoming and friendly, I open all features: visual, audio and text．The user can disable these at any time if they feel uncomfortable．
Quickly I find myself face-to-face with my first "partner"．A guy with glasses is staring back at me．He looks like he spends too much time in front of the computer．"Hey", I say, "how are you going?" "Good," says the guy．Sensing that he was not going to be very talkative, I hit the "next" button．
Just like that, I'm thrown across the world into someone else's bedroom．This time it looks like a middle-aged woman．I must have hit gold because 85 percent of Chatroulette users are male, according to the Wall Street Journal．She's wearing sunglasses and smiles back．Before I can even say a word, she "nexts" me．"WHAT?!"
Then, I fly through the Internet and arrive at my next partner．My nightmare, a man is sitting in his computer chair half-naked taking off his pants．Argghh! "Next, next, next!" For the next 30 minutes I keep my cursor （光标） over the "next" button．My experiences continue to be short, shocking, and largely uninteresting．I discouragingly hit "next" after seeing another naked man, and decide to end my session and close the window．This wasn't "the new social media experience" I was hoping for．Maybe it was just a little bit too random （随机的）．
64．It is the author's __________ that leads him into Chatroulette．
A．curiosity          B．unwillingness    C．enthusiasm          D．ignorance
65．The underlined word "disable" in Paragraph 2 means __________．
A．store                  B．close                C．misuse                D．copy
66．Among all the partners, __________ seemed to be the least interested in talking with the author.
A．the guy with glasses                      B．the middle-aged woman
C．the man in his computer chair            D．the last man mentioned
67．What is the author's attitude toward Charoulette?
A．Positive．           B．Supportive．       C．Objective．         D．Negative．

C

       I'm really nervous opening Chatroulette （a website）．I don't know if I'm more scared of the possibility of coming face-to-face with a naked （裸体的） guy doing improper things, or the possibility of having to speak to someone normal．But it's that uncertainty that's caused the "game" to explode into an Internet phenomenon．

       So, I hesitantly click "play"．My face appears in a small box to the left of the screen．I'm a 22-year-old guy, wearing jeans and a T-shirt, and sitting in my warmly lit bedroom —not too threatening, I think．Believing I look welcoming and friendly, I open all features: visual, audio and text．The user can disable these at any time if they feel uncomfortable．

       Quickly I find myself face-to-face with my first "partner"．A guy with glasses is staring back at me．He looks like he spends too much time in front of the computer．"Hey", I say, "how are you going?" "Good," says the guy．Sensing that he was not going to be very talkative, I hit the "next" button．

       Just like that, I'm thrown across the world into someone else's bedroom．This time it looks like a middle-aged woman．I must have hit gold because 85 percent of Chatroulette users are male, according to the Wall Street Journal．She's wearing sunglasses and smiles back．Before I can even say a word, she "nexts" me．"WHAT?!"

       Then, I fly through the Internet and arrive at my next partner．My nightmare, a man is sitting in his computer chair half-naked taking off his pants．Argghh! "Next, next, next!" For the next 30 minutes I keep my cursor （光标） over the "next" button．My experiences continue to be short, shocking, and largely uninteresting．I discouragingly hit "next" after seeing another naked man, and decide to end my session and close the window．This wasn't "the new social media experience" I was hoping for．Maybe it was just a little bit too random （随机的）．

64．It is the author's __________ that leads him into Chatroulette．

       A．curiosity        B．unwillingness         C．enthusiasm      D．ignorance

65．The underlined word "disable" in Paragraph 2 means __________．

       A．store        B．close       C．misuse     D．copy

66．Among all the partners, __________ seemed to be the least interested in talking with the author.

       A．the guy with glasses        B．the middle-aged woman

       C．the man in his computer chair      D．the last man mentioned

67．What is the author's attitude toward Charoulette?

       A．Positive．       B．Supportive．   C．Objective．     D．Negative．

根据短文内容，从下框的A-F选项中选出能概括每一段主题的最佳选项。选项中有一项为多余项。

Your chair is your enemy. That is the conclusion of several recent studies. Among people who sit in front of the television for more than three hours each day, those who exercise are as fat as those who don’t.

       So what’s wrong with sitting? The answer seems to have two parts. The first is that sitting is one of the most passive things you can do. Compared to sitting, standing in one place is hard work. To stand, you have to tense your leg muscles, and engage the muscles of your back and shoulders; while standing, you often shift from leg to leg. All of this burns energy.

       You may think you have no choice about how much you sit. But this isn’t true. Suppose you sleep for eight hours each day, and exercise for one. That still leaves 15 hours of activities. Even if you exercise, most of the energy you burn will be burnt during these 15 hours, so weight gain is often the cumulative(累积的) effect of a series of small decisions: Do you take the stairs or the elevator? Do you walk to the corner store, or drive?

       But it looks as though there’s a more sinister aspect to sitting. Some evidence suggests that when you spend long periods sitting, your body actually does things that are bad for you.

       Lipoprotein lipase(蛋白脂酶) is a molecule that plays a central role in how the body processes fats. Low levels of lipoprotein lipase are associated with a variety of health problems. Studies in rats show that leg muscles only produce this molecule when they are actively being moved. The result is that when you sit, an important part of your metabolism(新陈代谢) slows down. You may also have a higher risk of suffering from diabetes(糖尿病).

       Some people have advanced radical solutions to the sitting syndrome(综合症): replace your sit-down desk with a stand-up desk, or watch television in a rocking chair. But whatever you choose, know this. The data is clear; look out for your chair.

What would be the best title of this passage?

       A．Become an Athlete to Be Healthy.

       B．Choose a Better Chair for You.

       C．How to Speed Up Your Metabolism.

       D．Stand Up While You Read This.

Paragraphs 2 and 3 tell us that          .

       A．taking too much exercise harms people’s health

       B．sitting a lot reduces the benefits of taking exercise

       C．people needn’t depend on exercise to keep healthy

       D．healthy people are those who sit less and stand more

Which of the following is the best advice on how to control our weight?

       A．Exercising at least an hour a day.

       B．Standing as long as possible.

       C．Using our energy actively in daily life.

       D．watching TV in a rocking chair.

The author mentions lipoprotein lipase mainly to           .

       A．show that it plays a big part in keeping us healthy

       B．tell us that it isn’t produced while we are sitting

       C．suggest that we should take less exercise to be healthy

       D．prove sitting for long is bad for our body