单选题 24.Overpopulation poses a terrible threat to the human race. Yet it is probably______a threat to the human race than environmental destruction.

【正确答案】 B

【答案解析】not more than不如……更……与其……不如……，不超过，不比……更。no morethan至多，两个都不，如：This book is no more interesting than that one．这本书不比那本书更有趣，即两本书都没意思。答案是B。