木独脚桅杆的最大起重量约为（）。
A.10t
B.20t
C.30t
D.40t
参考答案：B
解析：木独脚桅杆的起重高度在15m以内，起重量在20t以下。
“它倾听远处森林的喧哗/和深谷中小溪的歌唱。”这里用了什么修辞？好处是什么？
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We were all very much attracted by the beautiful scenery ______ we set foot in the village.
A．quickly
B．suddenly
C．finally
D．immediately
