4．warm____________ (使)暖和起来；(使)热身

　　5．all of a____________ 突然，猛地

　　6．be related____________ 和......相关，和......有联系

　　7．be curious____________ 对......好奇

　　8．ring____________ (铃声、枪声等)突然响起

　　【答案】　1.in 　2.to　3.the　4.up　5.sudden

　　6．to　7.about　8.out

　　根据提示补全下列教材原句

　　1．In a scientific study，doctors asked 20 men and 20 women to keep their hands in very hot water for as long as possible while breathing in different smells.

　　在一项科学研究中，医生让20位男士和20位女士闻不同的气味，同时将手尽可能长时间地放在很热的水中。

　　2．Since it_is_believed_that strong smells can affect the senses，volunteers were required not to eat or drink for eight hours before the experiment.

　　因为人们认为强烈的气味可能影响感官，所以，志愿者们在实验前八小时不准吃喝任何东西。

　　3．One explanation is that women's sense of smell is better developed than that of men，and is linked to recognizing the smell of babies.

　　一种解释是：女人的嗅觉比男人的嗅觉发育得更好，且与识别婴儿的体味有关。

　　4．While having dinner, listen to some enjoyable music rather_than watch television.

　　吃饭时，听一些愉快的音乐而不是看电视。

　　5．There was such a terrible snowstorm that I could hardly see.

如此糟糕的暴风雪让我几乎看不见什么东西。