In about two years, NASA astronauts will go into space with personal assistants. Robotic assistants, of course. About the size of softballs, these personal satellite assistants (PSAs) can float throughout the space shuttle or space station, automatically monitoring life support systems, snapping photos, and taking over monitoring tasks from failed sensors. They're equipped with collision avoidance system so they won't bump into anything Naturally, they're wireless. Thanks to their videoconferencing capabilities, the PSAs offer a virtual presence for ground crews and scientists, letting them advise astronauts--in real time --in the midst of their experiments. The PSAs. will be stowed until the spacecraft reaches orbit (天体运行的轨道). And then activated by the astronauts, ground crews, or even by the spacecraft itsel
A. With the help of PSAs, NASA astronauts can deal with many affairs in the space shuttle or space station more easily.
B. PSAs are mechanical devices which can float all over the space station without any collision.
C. PSAs works only under the voice or radio commands of astronauts.
D. PSAs can track inventories if "smart" identification tags are added to inventory items.
更多"Passage 2
"的相关试题:
[单项选择]
Passage 2
In about two years, NASA astronauts will go into space with personal assistants. Robotic assistants, of course. About the size of softballs, these personal satellite assistants (PSAs) can float throughout the space shuttle or space station, automatically monitoring life support systems, snapping photos, and taking over monitoring tasks from failed sensors. They're equipped with collision avoidance system so they won't bump into anything Naturally, they're wireless. Thanks to their videoconferencing capabilities, the PSAs offer a virtual presence for ground crews and scientists, letting them advise astronauts--in real time --in the midst of their experiments. The PSAs. will be stowed until the spacecraft reaches orbit (天体运行的轨道). And then activated by the astronauts, ground crews, or even by the spacecraft itsel
A. With the help of PSAs, the ground crews and scientists can present in real time in the spacecraft.
B. With the help of PSAs, the ground crews and scientists can control the spacecraft as if they were there.
C. With the help of PSAs, the ground crews and scientists cannot in real time present in the spacecraft.
D. With the help of PSAs, the ground crews and scientists cannot advise the astronauts to deal with different situations.
[单项选择]PASSAGE TWO
About a century ago more people would not have appreciated the study of a foreign language as they do today. Gone are those days when patriotism towards one’s own language was a major obstacle to learning foreign languages, a time when most nations were trying to throw their alien rulers out of their countries in their freedom struggles.Gone are those days when people were proud of their mother or father tongues and considered that their native languages alone will suffice the need to survive. Language skills today have become as important as other business and career skills like IT, vocational or professional skills. Thus learning a foreign language today has become essential for an individual whether it is for careers, growing a business, or even to make an impression.
All that one needs to possess these days is a drive to learn a foreign language and there are all kinds of institutes and courses that teach various foreign languages like French, German, Spanish, and J
A. it was too difficult
B. it was not allowed
C. it was seen as disloyalty
D. it was taught by foreign rulers
[单项选择]
A. The sadness of being involved in accidents. B. Ways to limit the use of private cars. C. The serious pollution on motor roads. D. Freedom to travel quickly and safely.
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