标题: 请教PP语法题:) [打印本页] 作者: lesleyxie 时间: 2003-9-27 03:47 标题: 请教PP语法题:) 4. Perhaps the most significant postwar trend was the decentralization of cities throughout the United States, _________ when massive highway-building programs permitted greater suburban growth.
(A) and accelerated a phenomenon (B) a phenomenon that accelerated (C) accelerating a phenomenon which, (D) the acceleration of which phenomenon
68. The Mississippi riverboat, which (evolved) from simpler (steamship) of the early 1800's, became the (dominant) form of (passenger transport) on the Mississippi River.
答案选B, 是不是应该改成复数?
70. Stars provided early (astronomer) with a (reference) system (for) measuring (the motions) of planets, the Moon, and the Sun.
答案选A, 是否也是改为复数?
93. Copper was the first (metal used) by humans and is second (only) to iron (into) its utility through (the ages).
