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Watching Microcurrents Flow
We can now watch electricity as it flows through even the tiniest circuits. By scanning the magnetic field generated as electric currents flow through objects, physicists have managed(46). The technology will allow manufacturers to scan microchips for faults, as well as revealing microscopic defects in anything from aircraft to banknotes.
Gang Xiao and Ben Schrag at Brown University in Providence, Rhode Island, visualize the current by measuring subtle changes in the magnetic field of an object and(47)
Their sensor is adapted from an existing piece of technology that is used to measure large magnetic fields in computer hard drives. 'We redesigned the magnetic sensor to make it capable of measuring very weak changes in magnetic fields,' says Xiao.
The resulting device is capable of detecting a current as weak as 10 microamperes, even when the wire is buried deep within a chip, and it shows up features as small as 40 nanometers across.

A.
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D
D 解析:manage to +v. 是“设法做成”的意思。picture在此是动词,“to picture......

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SECTION B ENGLISH TO CHINESE
Directions: Translate the following text into Chinese.
Every day, newspapers, magazines, and television fill our eyes and ears with reports about the world. The unemployment is down four-tenths of a percent; another candidate has declared his intention to run; the space shuttle completes a successful mission; guerrillas claim responsibility for an attack on a refugee settlement. We rarely question such information; instead, we accord it the status of fact by making two crucial assumptions: that such stories could be verified if we wanted to check into them and that the sources who deliver them have no intent to deceive us.
Yet behind the simplest news stories lie definitions, perceptions, and categories that could become sources of different views by equally competent hearers and observers, that could, in other words, spawn arguments maintaining different views of reality. We can make this point more clearly by looking at our sample news items cited above. The unemployment rate, for example, is an extremely complex indicator; reporting procedures can and do change such a figure. If, for instance, only those actively looking for work are counted among the unemployed, then the figure will not indicate those who have despaired of finding work and those who have never tried. Those who are working part time and wish to be working full time also may not be included. Thus the fact 'of an increase or decrease in the rate of unemployment may not be such a fact after all; much depends on a definition of the unemployed'.
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