许昌济源平顶山2020年高三第二次质量检测数学答案及试题(高三数学)

What does the underlined phrase “the trend” in the last paragraph refer to?
A.Elephants facing greater danger.
B.Elephants growing more slowly.
C.Fewer female elephants staying alive.
D.More female elephants being tuskless.
解析:D 考查推理判断。根据尾段第一句“The recent ban on ivory in both the US and China should help get rid of, or at least reduce, elephant hunting”可知,禁令,这应该有助于消除或至少减少对大象的猎杀;结合该段第二句“However, scientists are not sure how long it will take for elephants with a higher rate of tuskless females, to change the trend”可知,科学家们并不确定对拥有较高比例无长牙雌象的大象们来说需要多长时间才能改变这种趋势。据此可推知,画线词指代“更多的雌象没有长牙”这一趋势,故D项正确。