Someanimalshavecoloredandspottedcoatssothattheymay______.
A.appearfrighteningtotheenemies
B.looklikeleavesorbranches
C.keepmotionlesswhenanenemyiscoming
D.mixwiththesurroundingsforsafety
正确答案:D[解析]见第二段倒数第二、三句话。

Someanimalshavecoloredandspottedcoatssothattheymay______.
A.appearfrighteningtotheenemies
B.looklikeleavesorbranches
C.keepmotionlesswhenanenemyiscoming
D.mixwiththesurroundingsforsafety
正确答案:D