【题目】The visitors looked quite ________ by the beautiful view at the top of Mount Tai.
A.tired
B.impressed
C.worried
D.puzzled

【答案】B
【解析】句意：泰山顶上的美景给游客留下了非常深刻的印象。A. tired劳累的；B. impressed留下印象的；C. worried担忧的；D. puzzled感到困惑的。故选B。