问题
选择题
With sufficient scientific information a manned trip to Mars should be _____.
A.obtainable
B.potential
C.considerable
D.feasible
答案
答案:D
考查形容词词义辨析。feasible可行的,可做到的;obtainable可得到的; considerable相当的,可观的;potential潜在的,可能的。