[单项选择]The new machines must ______strictly according to the instructions.
A. be operated B. be operating C. operate D. operated

[单项选择]According to the passage, new technologies are likely to influence _____.

[单项选择]According to the passage, choices must be made because________.


A. resources are abundant
B. there is too much for us to do
C. there are only 24 waking hours in a day
D. our means are limited, but our wants are unlimited

[单项选择]Babies love a beat, according to a new study that found dancing comes naturally to infants. The research showed babies respond to the rhythm of 16 , and find it more interesting than speech. The findings, based 17 a study of 120 infants between five months and two years old, suggest that humans may be born with a 18 to move rhythmically in response to music. Researchers find that it is the beat 19 other features of the music, such as the melody, 20 produces the response in infants. They 21 found that the better the children’s movements were able to coincide with the music, the more they smiled. To test babies’ reaction to music, the researchers 22 recordings of classical music, rhythmic beats and speech to infants, and videotaped the 23 In addition, they recruited professional ballet dancers to analyze how well the babies 24 their movements to the music. During the experiments, each baby
A. voice
B. movement
C. music
D. dance

[单项选择]According to the new tax law, any money earned over that level is taxed at the （）of 59 percent.
A. ratio
B. percentage
C. proportion
D. rate

[填空题]Don’t worry, be happy and, according to a new research, you will also be healthy.
It is estimated that over the course of one year, Americans suffer 1 billion colds. But new research shows that all it may take to (36) this common affliction is a positive and upbeat attitude.
People who are happy, relaxed and (37) , are less likely to catch a cold than those who are depressed, nervous or angry, according to a new study (38) in the journal Psychosomatic Medicine.
Healthy volunteers were first asked to rate their (39) to experience positive and negative emotions - how often they felt pleased, relaxed, happy, or anxious, depressed and hostile. The (40) were next given a squirt up the nose of a rhinovirus (鼻病毒), the nasty little germ that cause colds. Researchers then watched the volunteers to see who came down with a cold and how the unlucky ill (41) their cold symptoms.
"We found that people who re