单选题
The sea turtle"s natural habitat has been considerably reduced.
Asuddenly
Bgenerally
Cslightly
Dgreatly
正确答案
答案解析
题干意为“海龟的自然栖息地大大地减少了。”句中划线词意为“相当大的”。D项greatly意为大大地；例句：His writing has improved greatly in this semester．这学期他的写作有了很大进步。A项意为突然地；B项意为一般地；C 项意为轻微地；故选D项。