新概念英语第三册18课Multiple choice答案

ACDCC CADDA BC
at one blow 强调一次重击
all of a sudden--->suddenly 突然,出乎意料地
with a light touch 以轻松愉快的格调
Oddly shaped forms that are suspended from the ceiling and move in response to a gust of wind are quite familiar to everybody.
Oddly...that...
that 引导的定语从句用来限定shaped forms
are ...familiar to...谓语
句子主干：Oddly shaped forms are familiar to everybody
that 定语从句中：in response to / in reaction to 作为对.的反应