27.(It was) not until the 1920's that pollution came (to be viewed) by many (as) a threat to the health of( live )on Earth.
答案:D:lives
强调句也可以用过去时的?不是只能是it is ...that 的吗?
35.In 1820 (there were) only 65 (daily) newspapers in the united states, (which) total daily circulation of (perhaps )100,000.
答案:C:with
我觉得答案应该是D, 从句可以理解为of which(指代US)total daily circulation perhaps 100,000. 缺谓语,所以D错