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【单选题】
If you take a bus at the airport, will take you half an hour to get here. [ ]A.
they
B.
it
C.
that
D.
these
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举一反三
【单选题】How did Eiffel make the iron belt running from pillar to pillar perfectly horizontal?
A.
He made a careful plan.
B.
He used hair to test whether the tower is tilting.
C.
He embedded water jack in the column.
D.
He deployed creeper cranes.
【单选题】Manufactures make most engine pistons from ________, which is less than half the weight of iron.
A.
iron
B.
nickel
C.
chromium
D.
aluminum
【单选题】Cast iron can be used to make? 铸铁可以制作?
A.
gates
B.
railing
C.
engines
D.
medical instruments
【简答题】make —— iron and glass —— different —— others
【单选题】Manufacturers make most engine piston from ______, which is less than half the weight of iron.
A.
iron
B.
nickel
C.
chromium
D.
aluminum
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