单项选择题

A．It created design problems for architects.
B．It made skyscrapers more expensive to build.
C．It was needed for transporting construction materials.
D．It enabled architects to design their office buildings.
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单项选择题
A．It needs to have more French lesson tapes.B．It needs to have its controls repaired.C．It is different from all the other laboratories.D．It can be operated rather easily.
A．It needs to have more French lesson tapes.
B．It needs to have its controls repaired.
C．It is different from all the other laboratories.
D．It can be operated rather easily.
单项选择题
A．Upstairs.B．A rubbish container.C．Outside the window.D．Pieces of paper under the bed.
A．Upstairs.
B．A rubbish container.
C．Outside the window.
D．Pieces of paper under the bed.
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