Anyone who has ridden on a railway train knows how rapidly another train flashes by when it is traveling    .
A. in the same direction         B. in the opposite direction   
C. toward the opposite direction        D. against the same direction

________ has ridden on a railway train knows how ________ another train flashes by when it is traveling in the opposite direction．

1. A.
   Anyone who; rapid
2. B.
   Whoever; rapidly
3. C.
   Anything that; rapid
4. D.
   Whatever; rapidly

_________ has ridden on a railway knows how rapidly another train flashes by when it is traveling in the opposite direction．

1. A.
   Anyone who
2. B.
   Who that
3. C.
   No matter who
4. D.
   Those who