According to one WHO official,the longer the virus of bird flu spresds among animals,_____.

题目

According to one WHO official,the longer the virus of bird flu spresds among animals,_____.
A.the higher is the rate of human infection B.the rate of human infection will be higher C.the higher the rate of human infection D.the higer will be the rate of human infection

答案

C.the higher the rate of human infection （will be）是对的.这里省略了will be.
这是“the +比较级A ,the +比较级B”句型,“越.,就越.”的意思.两个句子,除了前面的比较级外,后面的部分都要用陈述语序.