LAB GRE 填空 Day 7 任务
对应讲义 161-196题
GRE
GRE 题源解析
GRE 题源 Day 1 Most advocates of space exploration by the United States would not explicitly associate spaceflight with (i)_____, yet that belief, Launius and McCurdy write, is among the roots of arguments (ii)_____ human spaceflight. Throughout United States history there has been (iii)_____ —seek utopia—on the frontier, and many space advocates have used that …