问题
选择题
—What qualities does a person need to become an astronaut?
—He ________be knowledgeable，independent and creative.
A．can
B．may
C．would
D．should
答案
答案：D
考查情态动词。句意：一个宇航员应具备的品质：知识渊博、独立并有创造性。根据语意可知空白处应填情态动词should，表示“应该”。