Question

—Adult pandas can weigh more than 100 kilograms.

—Amazing! After all, pandas look tiny at birth.

A.when they die B.when they are born C.when they grow up

Answer

B

【解析】

句意：——成年大熊猫体重可超过100公斤。——太神奇了!毕竟，熊猫出生时看起来很小。

考查时间状语。when they die当他们死亡；when they are born当他们出生；when they grow up当他们长大；根据“pandas look tiny”可知熊猫看起来很小，可推测出划线词组意思是“出生时”，所以用“when they are born”，故选B。