题目

阅读理解MarieTharp, who was born in Michigan in 1920, produced one of the world's first mapsof the ocean floor. As a female, Tharp never thought she could do soilsurveying like her father. Women during her time were prevented from working inthe scientific field. Jobs for young women were limited in options to:secretary, bookkeeper, nurse, school teacher or librarian.DuringWorld War II, since many of the men were off fighting, there was opportunityfor women to fill certain job roles. She earned her Master's degree in Geologyin 1944, and another Bachelor's degree in mathematics in 1948. Afte---Could you tell us __________ ? ---About two weeks. A．how often are we going to be away B．how often we are going to be away C．how long are we going to be away D．how long we are going to be away