第4题: [单项选择]The aim of the voyages Maury was responsible for in the 1840s was______. A. to make some sounding experiments in the oceans B. to collect samples of sea plants and animals C. to estimate the length of cable that was needed D. to measure the depth of the two oceans 参考答案:D 答案解析:[解析] 细节题。本题问的是:莫里在19世纪40年代负责的航行的目的是______。依据文章第2段第4句“In the 1840s,Maury had been responsible for enc