单选题She was told to give the award {{U}}to whom she ever thought{{/U}} had contributed most to the welfare of the student body.

单选题"They're the best team I've seen thus far," says ______ men's basketball coach Larry Brown.

单选题A middleman's work may become difficult because ______.

单选题There is someone in the hotel whose job is to be on the watch out of those people who are dawdling in the loby. A. trottering B. truckling C. loitering D. triturating

单选题Three years ______ before he returned home from the United States.

单选题Careful testing is necessary before any more experiments can continue with the exploring submarine. A. needful B. in need of C. necessity D. of necessity

单选题______ the writer's craft through a consideration of rhetorical patterns is a useful way to study writing． A．Exploring B．Exploiting C．Employing D．Embodying

单选题Born in 1842 in New York City, William James showed little ______ of academic brilliance during his school years. A. confidence B. persistence C. evidence D. insistence

单选题When I first came to this country, I {{U}}thought little{{/U}} that I should stay here so long.

单选题Without the music, the children would have not had so much fun.

单选题Sympathy often engenders love, which is usually unreliable.

单选题Feelings of infinite ______ seized him as he racalled the days when he met with misfortune.

单选题Memory Brains are different from computers, but the analogy can be helpful. Like the PC on your desk, your mind is equipped with two basic types of memory: "working memory" for juggling information in the present moment, and "long-term memory" for storing it over extended periods. Contrary to popular wisdom, our brains don't record everything that happens to us and then bury it until a hypnotist or a therapist helps us dredge it up. Most of what we perceive hovers briefly in working memory, a mental play space akin to a computer's RAM, then simply evaporates. Working memory enables you to perform simple calculations in your head or retain phone numbers long enough to dial them. And like RAM, it lets you analyze and invent things without creating a lasting record. Long-term memory acts more like a hard drive, physically recording past experiences in the brain region known as cerebral cortex. The cortex, or outer layer of the brain, houses a thicket of 10 billion vine—like nerve cells, which communicate by relaying chemical and electrical impulses. We can will things into long-term memory simply by rehearsing them. But the decision to store or discard a piece of information rarely involves any conscious thought. It's usually handled automatically by the hippocampus, a small, two-winged structure nestled deep in the center of the brain. Like the key-board on your computer, the hippocampus serves as a kind of switching station. As neurons out in the cortex receive sensory information. They relay it to the hippocampus. If the hippocampus responds, the sensory neurons start forming a durable network. But without that act of consent, the experience vanishes forever. By storing only the information we're most likely to use, our brains make the world manageable. Perfect retention may sound like a godsend, but when the hippocampus gets overly permissive, the results can be devastating. At the other end of the spectrum stands impairments of the memory, which can be caused by brain surgery as well as normal aging. Other memory busters include depression, anxiety and a simple lack of stimulation—all of which keep us from paying full attention to our surroundings. What, then, are the best ways to protect your memory? Obviously, anyone concerned about staying sharp should make a point of sleeping enough and managing stress. And because the brain is at the mercy of the circulatory system, a heart-healthy lifestyle may have cognitive benefits as well.

单选题The first watermill was horizontal and resembled a rudimentary turbine.

单选题It was not long before Skinners, the famous behaviorist, realized the limitations of his psychological research than another psychologist came with his forceful arguments against Skinners' theory. A. realized... when B. had realized... when C. was realizing... then D. would realize... as

单选题Most modern printing inks contain synthetic pigments, binders and solvents as well as ingredients to promote drying.

单选题When he fails his final examination, he is sure of a university place.

单选题There is no other man in history than Thomas Jefferson who {{U}}formulated{{/U}} the ideas of democracy with such fullness, persuasiveness and logic.

单选题I do not advocate building the park near a jetport, which might make people to suffer from defective hearing.

单选题He was completely ________by her tale of hardship.