题干
… you got the news that the rocket was sent up successfully?
……From the radio.
……From the radio.
A：How was it that
B：How it was that
C：What was it that
D：What it was that
答案(点此获取答案解析）
A
、
，得到两个数．想一想，它们的和可能有哪些？可能有15吗？为什么？