The Gulf of Mexico is being polluted seriously.That has affected____several hundred kinds of sea
问题描述：
The Gulf of Mexico is being polluted seriously.That has affected____several hundred kinds of sea
接上面animals there A.at least B at once C at birth D at times 选什么,
答
a,墨西哥湾被污染得很严重,这至少已经影响了数百种海洋生物.