摘要： A NASA experimental jet, the X-43A, flew at a world-record speed---11,260 kilometres an hour on November 17. This speed is as that of sound. A. as ten times fast B. ten times so fast C. ten times as fast D. ten times faster
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A NASA experimental jet , the X-43A,flew at a world –record speed ---11,260 kilometres an hour on November 17.This speed is ______ as that of sound.
- A.astentimesfast
- B.tentimessofast
- C.tentimesasfast
- D.tentimesfaster
A NASA experimental jet, the X-43A, flew at a world-record speed---11,260 kilometres an hour on November 17. This speed is ____ as that of sound.
A. as ten times fast B. ten times so fast
C. ten times as fast D. ten times faster
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