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The idea of being able to wa"的相关试题:
[单项选择]C
The idea of being able to walk on water has long interested humans greatly. Sadly, biological facts prevent us ever accomplishing such a thing without artificial aid --- we simply weigh too much, and all our mass pushes down through our relatively small feet, resulting in a lot of pressure that makes us sink.
However, several types of animals can walk on water. One of the most interesting is the common basilisk Basilicus basilicus, a lizard（蜥蜴）native to Central and South America. It can run across water for a distance of several meters, avoiding getting wet by rapidly hitting the water’s surface with its feet. The lizard will take as many as 20 steps per second to keep moving forward. For humans to do this, we’ll need huge feet that we could bring up to our ears in order to create adequate “hitting.”
But fortunately there is an alternative: cornflour. By adding enough of this common thickening agent to water (and it does take a lot), you can create a “non-Newtonian” li
A. are not interested in it
B. have biological limitations
C. have not invented proper tools
D. are afraid to make an attempt
[单项选择]Jonnie was not barely able to walk without help because of the bad injury in his left leg.（ ）
A. was not
B. without help
C. because of
D. bad
[单项选择]A Bad Idea
Think you can walk，drive，take phone calls，e-mail and listen to music at the same time Well，New York’s new law says you can’t.(46)The law went into force last month，following research and a shocking number of accidents that involved people using electronic gadgets (小巧机械)when crossing the street.
Who’s to blame(47)“We are under the impression that our brain can do more than it often can，” says Rene Marois，a neuroscientist (神经科学家)in Tennessee. “But a core limitation is the inability to concentrate on two things at once.”
The young people are often considered the great multi-taskers.(48)，A group of 18- to 21-year-olds and a group of 35- to 39-year-olds were given 90 seconds to translate images into numbers，using a simple code.(49)But when both groups were interrupted by a phone call or an instant message，the older group matched the younger group in speed and accuracy.
It is difficult to measure the productivity lost by multitaskers. But it is probably a lot. Jonathan
[单项选择]A Bad Idea
Think you can walk, drive, take phone calls, e-mail and listen to music at the same time Well, New York’s new law says you can’t. _____(46) The law went into force last month, following research and a shocking number of accidents that involved people using electronic gadgets (小巧机械) when crossing the street.
Who’s to blame _____ (47) "We are under the impression that our brain can do more than it often can," says Rene Marois, a neuroscientist (神经科学家) in Tennessee. "But a core limitation is the inability to concentrate on two things at once."
The young people are often considered the great multitaskers. _____ (48), A group of 18- to 21-year-olds and a group of 35- to 39-year-olds were given 90 seconds to translate images into numbers, using a simple code. _____ (49) But when both groups were interrupted by a phone call or an instant message, the older group matched the younger group in speed and accuracy.
It is difficult to measure the productivity lost by mult
