Question

【题目】At the beginning of the twentieth century,___the population all over the world?

A.what was

B.what were

C.how many are

D.how much is

Answer 1

【答案】A

【解析】句意：20世纪初期，全世界有多少人口？对population,price,speed等提问时应用what。population指某地区或国家的人口数时，应作为单数。