We were all there when the accident occurred.
A:happened B:broke C:spread D:appeared
Jack（）in the lab when the power cut occurred.
A:works B:has worked C:was working D:would work
The accident is reported to have occurred ______ the first Sunday in February.
A:at B:on C:in D:to
What dreadful idea occurred to the writer ( )
A:The receipt had been stolen by someone. B:someone had taken away the case. C:He could not claim his case without the receipt. D:He had left his receipt at home.
The news report tells us that when the crash occurred ______.
A:the ambulances and firemen arrived quickly B:none of the passengers was killed C:no additional help was necessary D:help was long delayed
{{B}}第二篇{{/B}}
? ?After the violent earthquake that shook
Los Angeles in 1994, earthquake scientists had good news to report: The damage
and death toll could have been much worse.
? ?More than 60 people
died in this earthquake. By comparison, an earthquake of similar intensity that
shook America in 1988 claimed 25,000 victims.
? ?Injuries and
deaths were relatively less in Los Angeles because the quake occurred at 4:31 a.
m. On a holiday, when traffic was light on the city’s highways. In addition,
changes made to the construction codes in Los Angeles during the last 20 years
have strengthened the city’s buildings and highways, making them more resistant
to quakes.
? ?Despite the good news, civil engineers aren’t resting
on their successes. Pinned to their drawing boards are blueprints for improved
quake - re - sistant buildings. The new designs should offer even greater
security to cities where earthquakes often take place.
? ?In the
past, making structures quake-resistant meant firm yet flexible materials, such
as steel and wood, that bend without breaking. Later, people tried to lift a
building off its foundation, and insert rubber and steel between the building
and its foundation to reduce the impact of ground vibrations. The most recent
designs give buildings brains as well as concrete and steel supports. Called
smart buildings, the structures respond like living organisms to an’
earthquake’s vibrations. When the ground shakes and the building tips forward,
the computer would force the building to shift in the opposite
direction.
? ?The new smart structures could be very expensive to
build. However, they would save many lives and would be less likely to be
damaged during earthquakes. |
One reason why the loss of lives in the Los Angeles earthquake was comparatively low is that ______.
A:new computers had been installed in the buildings B:large numbers of Los Angeles residents had gone for a holiday C:it occurred in the residential areas rather than on the highways D:improvements had been made in the construction of buildings and highways
{{B}}第二篇{{/B}}
? ?After the violent earthquake that shook
Los Angeles in 1994, earthquake scientists had good news to report: The damage
and death toll could have been much worse.
? ?More than 60 people
died in this earthquake. By comparison, an earthquake of similar intensity that
shook America in 1988 claimed 25,000 victims.
? ?Injuries and
deaths were relatively less in Los Angeles because the quake occurred at 4:31 a.
m. On a holiday, when traffic was light on the city’s highways. In addition,
changes made to the construction codes in Los Angeles during the last 20 years
have strengthened the city’s buildings and highways, making them more resistant
to quakes.
? ?Despite the good news, civil engineers aren’t resting
on their successes. Pinned to their drawing boards are blueprints for improved
quake - re - sistant buildings. The new designs should offer even greater
security to cities where earthquakes often take place.
? ?In the
past, making structures quake-resistant meant firm yet flexible materials, such
as steel and wood, that bend without breaking. Later, people tried to lift a
building off its foundation, and insert rubber and steel between the building
and its foundation to reduce the impact of ground vibrations. The most recent
designs give buildings brains as well as concrete and steel supports. Called
smart buildings, the structures respond like living organisms to an’
earthquake’s vibrations. When the ground shakes and the building tips forward,
the computer would force the building to shift in the opposite
direction.
? ?The new smart structures could be very expensive to
build. However, they would save many lives and would be less likely to be
damaged during earthquakes. |
The author’s main purpose in writing this passage is to______.
A:compare the consequences of the earthquakes that occurred in the U. S. B:outline the history of the development of quake- resistant building materials C:report new developments in constructing quake - resistant buildings D:encourage civil engineers to make more extensive use of computers
We were all there when the accident {{U}}occurred{{/U}}.
A:happened B:broke C:spread D:appeared
词汇语法
