问题
单项选择题
When is an ordinary tropical storm called a hurricane
A．When it begins in the Atlantic and Caribbean seas.
B．When it hits the coastline.
C．When it is more than 75 miles wide.
D．When its winds reach 75 miles per hour.
答案
参考答案：D
解析：细节信息。题干：一种普通的热带风暴在何时被称为飓风 根据原文“…circling winds of 75 miles per hour or more that give them hurricane status”，译文为：风速为每小时75英里或超过75英里的盘旋的风暴获得了飓风的地位。所以选d。