[填空题]

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 teclmology 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 wit

[填空题]
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 teclmology 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 wit

[简答题]Now we can find almost everything we need online and have _______________(我们所购之物送上门).

[填空题]I don’t want to watch TV. Maybe we can do something ______

[填空题]From the story of "Night Watch" we can conclude that the young Marine was（　）

[单项选择]________, he can now only watch it on TV at home.
A. Obtaining not a ticket for the match
B. Not obtaining a ticket for the match
C. Not having obtained a ticket for the match
D. Not obtained a ticket for the match

[单项选择]

Pool Watch

Swimmers can drown in busy swimming pools when lifeguards fail to notice that they are in trouble. The Royal Society for the Prevention of Accidents says that on average 15 people drown in British pools each year, but many more suffer major injury after getting into difficulties. Now a French company has developed an artificial intelligence system called Poseidon that sounds the alarm when it sees someone in danger of drowning.
When a swimmer sinks towards the bottom of the pool, the new system sends an alarm signal to a poolside monitoring station and a lifeguard’s paper. In trials at a pool in Ancenis, near Nantes, it saved a life within just a few months, says Alistair MeQuade, a spokesman for its maker, Poseidon Technologies.
Poseidon keeps watch through a network of underwater and overheard video cameras. AI software analyses the images to work out swimmers trajectories. To do this reliably, it has to tell
A. It must be able to swim.
B. It must keep walking round the pool.
C. It can distinguish between a swimmer and a shadow.
D. It can save a life within a few months.

[单项选择]

Swimmers can drown in busy swimming pools when lifeguards fail to notice that they are in trouble. The Royal Society for the Prevention of Accidents says that on average 15 people drown in British pools each year, but many more suffer major injury after getting into difficulties. Now a French company has developed an artificial intelligence system called Poseidon that sounds the alarm when it sees someone in danger of drowning.
When a swimmer sinks towards the bottom of the pool, the new system sends an alarm signal to a poolside monitoring station and a lifeguard’s pager. "In trials at a pool in Ancenis, near Nantes, it saved a life within just a few months," says Alistair McQuade, a spokesman for its maker, Poseidon Technologies.
Poseidon keeps watch through a network of underwater and overheard video cameras. AI software analyses the images to work out swimmers trajectories (轨道，轨线
A. It must be able to swim.
B. It must keep walking round the pool.
C. It can distinguish between a swimmer and a shadow.
D. It can save a life within a few months.