单选题
1.00分
The sea turtle's natural habitat has been considerably reduced.
参考答案: A
参考解析: 本句意思:海龟的自然栖息地大大地减少了。considerably意为“相当地,大量地”,与 greatly(非常,大大地)意思相近。suddenly突然;generally通常地;slightly轻微地。