D. Americans always seem to be on the go.
3. The phrase "highly charged" (paragraph 2) most probably means ______.
A. extremely free B. highly responsible
C. very cheerful D. full of mobility and change
4. It can be inferred from the passage that ______.
A. Americans want to participate in all kinds of activities
B. Americans' character is affected by their social and geographical environment
C. Americans do not know how to deal with silence
D. curiosity is characteristic of Americans
5. According to the passage, Americans tend to ignore the rest of the world because ______.
A. they are not interested in other countries
B. they are too proud of themselves
C. their country does not have many neighboring nations
D. they are too busy to learn about other countries
Text 5
Want a glimpse of the future of health care? Take a look at the way the various networks of people involved in patient care are being connected to one another, and how this new connectivity is being exp1oited to deliver medicine to the patient - no matter where he or she may be.
Online doctors offering advice based on standardized symptoms are the most obvious example. Increasingly, however, remote diagnosis (telemedicine) will be based on real physiological data from the actual patient. A group from the University of Kentucky has shown that by using an off--the-shelf (现成的) PDA (personal data assistance) such as a Palm Pilot plus a mobile phone, it is perfectly feasible to transmit a patient's vital signs over the telephone. Wi
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