单选题Why did the young man stop playing jokes on the servant? Because ______.

单选题During the second stage, if the family wanted to consume new goods and services, they had to enter the marketplace ______.

单选题She asked me when I ______ Beijing.[A] arrived[B] arrived to[C] reached[D] reached to

单选题Faces, like fingerprints, are unique. Did you ever wonder how it is possible for us to recognize people? Even a skilled writer probably could not describe all the features that make one face different from another. Yet a very young child--or even an animal, such as a pigeon--can learn to recognize faces. We all take this ability for granted. We also tell people apart by how they behave. When we talk about someone's personality, we mean the ways in which he or she acts, speaks, thinks and feels that make that individual different from others. Like the human face, human personality is very complex. But describing someone's personality in words is somewhat easier than describing his face. If you were asked to describe what a "nice face" looked like, you probably would have a difficult time doing so. But if you were asked to describe a "nice person", you might begin to think about someone who was kind, considerate, friendly, warm, and so forth. There are many words to describe how a person thinks, feels and acts. Gordon Allport, an American psychologist, found nearly 18 000 English words characterizing differences in people's behavior. And many of us use this information as a basis for describing, or typing his personality. Bookworms, conservatives, military types-people are described with such terms. People have always tried to "type" each other. Actors in early Greek drama wore masks to show the audience whether they played the villain's (坏人) or the hero's role. In fact, the words "person" and "personality" come from the Latin persona, meaning "mask". Today, most television and movie actors do not wear masks. But we can easily tell the "good guys" from the "bad guys" because the two types differ in appearances as well as in actions.

单选题Whydidthemengettosleepsolate?

单选题Whenwillthemancome?A.At7:30.B.NextSaturdaymorning.C.Around7pm.

单选题All we have a clock located inside our brains. Similar to your bedside alarm clock, your internal clock runs on a 24-hour cycle. This cycle, called a circadian rhythm, helps control when you wake, when you eat and when you sleep. Somewhere around puberty, something happens in the timing of the biological clock. The clock pushes forward, so adolescents and teenagers are unable to fall asleep as early as they used to. When your mother tells you it"s time for bed, your body may be pushing you to stay up for several hours more. And the light coming from your computer screen or TV could be pushing you to stay up even later. This shift is natural for teenagers. But staying up very late and sleeping late can get your body"s clock out of sync with the cycle of light and dark. It can also make it hard to get out of bed in the morning and may bring other problems, too. Teenagers are put in a kind of a gray cloud when they don"t get enough sleep, says Mary Carskadon, a sleep researcher at Brown University in Providence, RI. It affects their mood and their ability to think and learn. But just like your alarm clock, your internal clock can be reset. In fact, it automatically resets itself every day. How? By using the light it gets through your eyes. Scientists have known for a long time that the light of day and the dark of night play important roles in setting our internal clocks. For years, researchers thought that the signals that synchronize the body"s clock were handled through the same pathways that we use to see. But recent discoveries show that the human eye has two separate light-sensing systems. One system allows us to see. The second system tells our body whether it"s day or night.

单选题听下面一段对话，回答下列问题。

单选题Why didn't you make me a telephone call yesterday? I ______ about it.

单选题— I called his office, his home, and all other places he ______ possibly go to. But he was nowhere to be found. — He may not be in town.

单选题The words "host and hostess" in the last paragraph of Letter B mean ______.

单选题I'm sorry. I ______ you ______ to me.

单选题Don't punish him too much. ______ he's only a boy of eight.[A] First[B] First of all[C] After all[D] At all

单选题To our delight, she quickly ______ herself to the situation.

单选题What'swrongwiththatcar?[A]Itwasbroken.[B]Itstoppedonthewayformanydays.[C]Itdidn'tstart.

单选题China ______ the developing countries in the world.

单选题Howmanypostofficesdoesthemantalkabout?