求助一道GMAT语法题

题目

求助一道GMAT语法题
A surge in new home sales and a drop in weekly unemployment claims suggest that the economy might not be as weak as some analysts previously thought.
A.claims suggest that the economy might not be as weak as some analysts previously thought
B.claims suggests that the economy might not be so weak as some analysts have previously thought
C.claims suggest that the economy might not be as weak as have been previously thought by some analysts
D.claims,suggesting about the economy that it might not be so weak as previously thought by some analysts
E.claims,suggesting the economy might not be as weak as previously thought to be by some analysts
帮忙解释下整个句子和选择哪个选项,为什么?

答案

正确选项：A
句子分析：
主语：A surge（修饰成分） and a drop (修饰成分）
谓语：suggest
宾语：宾语从句that clause
在从句中,：economy might not be as weak as some analysts previously thought (economy be 被省略了）
B:主语是复合主语,谓语必须用复数
C：虽然可以说as后面是省略了economy,也勉强说的通,但是使用被动式过分强调被动这个动作,改变了句子原来的着重点,且和A相比明显很wordy
D：结构是主语+ING分词,没有谓语,非完整句
E：同D