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QӢZxⳣc
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磺һΣ
The new smart structures could be very expensive to build. However, that would save many lives and would be less likely to be damaged during earthquakes.
(yng)}Ŀ
The smart buildings discussed in the passage ________.
A. would cause serious financial problems
B. would be worthwhile though costly
C. would increase the complexity of architectural design
D. can reduce the ground vibrations caused by earthquakes
(dng)rͬW(xu)ֻһԒ(ͽrܸ)RxAxⲻ֪however@ԒĿcڶԒf“ͽڵĕrȺܶ˵ױp”(j)_𰸑(yng)ԓxB҂(yng)ԓRԭD(zhun)۵xˡ˿xԭĕrҪעD(zhun)۵ʾ~ҪУbuthoweveryeton the contrary
(sh)
漰(sh)ֵ}ĿҪ}еĕrg(sh)ԭжλҴ;ܸ(j)ԭеĔ(sh)MкӋQԇеӋһҪ(j)ɂ(sh)ֵóӋY(ji);ЕrԭЕ漰Ӌijһ(sh)ÿҕֽoĔ(sh)քtñ^@İ?dng)?sh)ֽoҪעھ[ϢԭĵڶгF(xin)Ϣ
... In 1862 Congress authorized two western railroad companies to build lines ... Actual work on this project began four years later ... In 1869 they met at a place called Promontory ...
(yng)}Ŀ
The construction of the transcontinental railroad took ________.
A. 9 years B. 7 years C. 4 years D. 3 years
ٿֻP(gun)עԭ?dng)?sh)ʽo18621869ҕʽo“four years later”`xB_𰸞D
e
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The author uses the example of the robot in space exploration to tell us ________.
A. the differences between robots and men
B. the reason why men need to sleep
C. about the need for robots to save power
D. about the danger of men working at night
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Qԇxֶĩܸε}DZεcԽ(jng)Ƕ䡣
QӢZxcP(gun)£
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