The fear of rabies is well founded;few people are known to recover from the diesease after the appearance of the clinical symptoms.
A few people are known to recover from the disease after the appearance of the clinical symptoms
B few people are known to have recovered from the disease once the clinical symptoms have appeared.
C...
D...
E....
答案是选B,各位高手,为什么A 不对,A 也是统一时态,而且我听人说最好不要用完成时态,请指教!
这个只能说B更优
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