67. (28020-!-item-!-188;#058&003766)
A pair of architects in Britain,who say that giant arches, bridges, and walls made of artificial bone could beeasier to design and build than conventional structures, and alreadydesigned a number of structures, including a bridge, for showing how their ideawould work.
(A) build than conventionalstructures, and already designed a number of structures, including a bridge,for showing
(B) build than conventionalstructures, and they have already designed a number of structures, whichincludes a bridge, to show
(C) build than conventionalstructures, have already designed a number of structures, including a bridge,to show
(D) also to build than conventionalstructures, already designed a number of structures, including a bridge, whichshows
(E) to build than with conventionalstructures, have already designed a number of structures, including a bridge,which shows
可是楼主很疑惑的是 主语是 A pair of architects ,谓语不是应当用单数吗？ C答案中明明是用的have啊。。。
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发表于 2011-11-15 09:31:50
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