A-A+
What does NASA plan to do? 查看材料A.To build one
问题详情
What does NASA plan to do? 查看材料
A.To build one more Hyper-X aircraft.
B.To carry out three more Hyper-X experiments.
C.To make the aircraft fly higher and longer.
D.To test another hypersonic flight at 10 times the speed of sound.请帮忙给出正确答案和分析,谢谢!
参考答案
正确答案:D
推断题。利用题干关键词可以定位到文章的最后一段,可以推断NASA计划下一次研发的超音速飞机的速度将达到声速的10倍。