This speed is as sound. A.as ten times fast B.ten times so fast C.ten times as fast ——青夏教育精英家教网—

摘要： This speed is as sound. A.as ten times fast B.ten times so fast C.ten times as fast D.ten times faster 答案 C

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This speed is　　　 as sound.

A.as ten times fast　　　　　　　　　　　　 B.ten times so fast　　

C.ten times as fast　　　　　　　　　　　　　 D.ten times faster

A NASA experimental jet, the X – 43A, flew at a world – record speed – 11, 260 kilometers an hour. This speed is as sound.

A．as ten times fast B．ten times so fast C．ten times as fast D．ten times faster

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

A NASA experimental jet, the X-43A, flew at a world-record speed－11 260 kilometers an hour on November 17．This speed is ________ as sound．

as ten times fast

ten times so fast

ten times as fast

ten times faster

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