B．Because they feared the monster.
C．Because they were too cold to move.
D．Because they were too hungry to move.
答案：B
解析：推理判断题。根据第三段的with looks of fear on their faces可知这些动物因害怕而不敢通过。
50. According to the text，________.
A．the sound was made by some rocks
B．the monster was some rocks in fact
C．the tortoise didn't fear the monster at all
D．the tortoise failed to climb the mountain
答案：B
解析：细节理解题。根据第四段的what he had thought was a monster was only a great pile of rocks，which formed a shape just like a monster可知怪物事实上是一堆石头。
Ⅳ.书面表达(满分24分)
假设你是李越。你受学校委托，将于寒假接待来自美国某中学的学生访问团。现请你按照下列要点，用英语写一篇发言稿。
◆交流活动的安排：学生座谈、参观校园
◆交流活动的意义：丰富学校生活、了解文化差异
注意：词数：100词左右，发言稿的开头已给出，不计入总词数。 Dear friends，
Welcome to our school.I’m Li Yue.____________________ ___________________________________________________________