A-A+
What has NASA planned to do？A．To make another
问题详情
What has NASA planned to do？
A．To make another 11-second hypersonic night at 10 times the speed of the sound．
B．To make three more Hyper X experiments．
C．To retest the aircraft that is left．
D．To make the aircraft fly higher and longer． 请帮忙给出正确答案和分析，谢谢！
参考答案
正确答案：A
问题句说“NASA计划做什么?”，利用NASA作为答案线索在文章最后一段找到答案相关句：Theagency(指代NASA)hasplansforanotherll-secondhypersonicflight，thistimeat10timesthespeedofthesound．该句说“NASA计划再作一次11秒钟的超音速飞行，飞行速度达到声音速度的10倍”，因此A是答案。
