(单选题)
Animals can become unusually ______ when they are upset by a sudden environmental change.
A.puzzled
B.dominant
C.vigorous
D.aggressive
参考答案:D
参考解析:
考查形容词辨析。句意:当环境突然改变之后,动物一般会有侵略性。puzzled意为“困惑的”;dominant意为“占优势的”;vigorous意为“精力充沛的”;aggressive意为“有侵略性的”,结合句意及前文的unusually可知此处aggressive最合适。故选D。
知识点: