Question

It is estimated that the number of foreigners coming to China to learn the language over the last few years ________ maintained an average annual growth rate of 35 percent．

1. A.
   has
2. B.
   have
3. C.
   is
4. D.
   are

Answer 1

A
這句句子的意思是“據(jù)估計(jì)，在過去的幾年中，來中國學(xué)習(xí)語言的外國人以每年35％的年增長率遞增�！边@里有時(shí)間狀語over the last few years，句子要用現(xiàn)在完成時(shí)，所以選項(xiàng)C和D均不對。而a number of加上可數(shù)名詞復(fù)數(shù)，我們謂語動(dòng)詞用復(fù)數(shù)，the number of加上可數(shù)名詞復(fù)數(shù)，謂語動(dòng)詞用單數(shù)，所以這里用has．