第10题describe的主语是the work of sb. on the geometry of what are called aperiodic tiles只是用来说明这部著作是关于什么的。aperiodic tiles是复数，所以应用what are called,除了这一点，B虽然保持了主谓一致，但由于这部著作描述的是出版时的理论，所以用过去时比现在
One pervasive theory explains the introduction of breakfast cereals in the early 1900s as a result of the growing number of automobiles, which led to a decline in horse ownership and a subsequent grain glut; by persuading people to eat what had previously been horse feed, market equilibrium was restored. (A) by persuading people to eat what had previously been horse feed, market equilibrium was restored (B) persuading people to eat what had previously been horse feed restored market equilibrium (C) by persuading people to eat what had previously been horse feed, it restored market equilibrium (D) the persuasion of people to eat what had previously been horse feed restored market equilibrium (E) market equilibrium was restored when people were persuaded to eat former horse feed B&D两项网络上存争议： 本人愚顿，但认为：E主语的重心在the persuasion B的重心在persuading people to eat what had previously been horse feed 覆盖的整件事
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发表于 2009-2-19 00:12:00
