In order to stay warm during an extended period of time exposed to frigid weather a big heavy coat worn over normal clothing is

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问题 In order to stay warm during an extended period of time exposed to frigid weather a big heavy coat worn over normal clothing is not always the best method. If you are going to be spending a______period in the cold it is much better to dress in several lighter layers rather than in one heavy layer. By wearing layers the clothing acts______containment system for warmth. It takes body heat longer to escape layers than it does to escape one heavy layer. In addition, wearing a hat is recommended because most body heat is lost through the head and mittens are______to gloves.

选项 A、length
B、lengthy
C、lengthen
D、lengthening

答案B

解析 单词形态:形容词1.这是一道单词形态题,选项均为形容词。2.空格内需填入一个形容词修饰名词period,因此(B)为正确选项。
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