A pair of architects in Britain, who say that giant arches, bridges, and walls made of artificial bone
could be easier to design and build than conventional structures, and already designed a number of
structures, including a bridge, for showing how their idea would work.
(A) build than conventional structures, and already designed a number of structures, including a
(B) build than conventional structures, and they have already designed a number of structures,
which includes a bridge, to show
(C) build than conventional structures, have already designed a number of structures, including a
(D) also to build than conventional structures, already designed a number of structures, including a
(E) to build than with conventional structures, have already designed a number of structures,
including a bridge, which shows
答案是C，有个问题，a pare of 我怎么记得应该用单数谓语的, 如果这里用复数对的话，那么
a number of 也可以用复数？ numbers of 也用复数（无异议） 胡乱中 | 
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发表于 2010-7-28 12:36:35
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