情景交际。

Policeman:Now, Jimmy, did you get a good view(看清) of the accident?

Jimmy:Oh, yes. I was standing outside the bank building and I saw it quite clearly.

Policeman:Do you know what time it was?

Jimmy:Yes.  1    It was 2:45 exactly.

Policeman:Good.   2  

Jimmy:Well, quite slowly - about 10 miles an hour. It was coming up York Road.   3    But they were still

red when he went over them.

Policeman:I see.  4   Was it also driving slowly?

Jimmy:It was coming along Union Street about 30 miles per hour. It was a blue Toyota.  5  

Policeman:Did you see what colour his traffic(交通) light was?

Jimmy:Yes, it changed to yellow just before he crossed it.

脊髓小脑性共济失调的突出临床表现是（）

A.遗传早现

B.共济失调

C.眼震

D.痉挛步态

E.痴呆