【题目】_________ the children are excited - this is the first time they've been abroad.
A.No problem
B.No way
C.No idea
D.No wonder

【答案】D
【解析】考查固定短语辨析。句意：难怪孩子们这么兴奋，这是他们第一次到国外。No problem”不麻烦，没事儿“；No way”没门“；No idea” 不知道“；No wonder”难怪“。根据题意，故选D。