更多"It is （ ） to stare directly at the "的相关试题:
[填空题]She was determined to stare down any disaster in her efforts.
[填空题]When babies stare at the television--they are actually learning about the world, U.S. researchers said. Parents may want to limit what their (47) see on television, based on the study, said Professor Donna Mumme. "Children as young as 12 months are making decisions based on the (48) reactions of adults around them. It turns out they can also use the information they pick up from television. This means that adults might want to think twice before they speak in a (49) or surprising tone or let a kid see television programs meant for an older person." Mumme’s team already knew that babies watch other children and adults for (50) about the world. A mother (51) her baby to eat some soup or a brother crying in fear when a dog (52) can influence an infant’s (53) Mumme’s team tested babies to (54) if television has the same influence, showing actors reacting on a videotape to objects such as a red spiral letter holder, a b
[填空题]
A. admire
B. stare
C. desire
D. quiet
[单项选择]You stare at waterfall for a minute or two, and then shift your gaze to its surroundings. What you now see appears to drift upward.
These optical illusions occur because the brain is constantly matching its model of reality to signals from the body’s sensors and interpreting what must be happening—that your brain must have moved, not the other; that downward motions is now normal, so a change from it must now be perceived as upward motion.
The sensors that make this magic are of two kinds. Each eye contains about 120 million rods, which provide somewhat blurry black and white vision. These are the windows of night vision once adapted to the dark, they can detect a candle burning ten miles away.
Color vision in each eye comes from six to seven million structures called cones. Under ideal conditions, every cone can "see" the entire rainbow spectrum of visible colors, but one type of cone is most sensitive to red, another to green, a third to blue.
Rods and cones send
A. cones
B. color vision
C. rods
D. spectrum
[填空题]A sick infant may stare and have ______ or cold limbs.
[填空题]Profit
Entrepreneurship is directly responsible for production The business person (entrepreneur) takes a cue from consumers in deciding what they want—or, in the case of a new product (8) Profit means different things to different people. According to some public opinion polls, many people are not sure what it is, but they are sure (9) Workers may look at profit as an unfairly large payment to the entrepreneur that deprives them of a higher wage. The business person thinks of profit (10) During negotiations before the settlement of the second baseball strike in August, 1985, the Players’ Association claimed the owners had made profits of $ 91 million, an accounting firm said owner profits were $ 43 mil- lion, and the owners insisted they had lost $ 9 million. The truth was that all three were correct. The disparity in the figures was due to the fact that each group was defining profit differently. Let us now see if we can develop a more exact defi
