enough to stand the atmospheric pressure of the upper stratosphere.
C. From there, she’ll take a death-defying leap back to Earth at supersonic speed.
D. “In 30 seconds, I’ll be going Mach (马赫) speed,”said Sterns.
E. How will Sterns make her giant jump?
F. In short,blood boils.
答案：1.C 2.E 3.D 4.A 5.F
