句子反复磨耳朵（中级续）451-460

听前提示一、三遍英文，一遍中文，再一遍英文。二、从听懂的词入手，理解句子含义。三、根据中英文意思，听不懂的多听几遍。

原文

451.We all wondered why she had dumped such a nice man.我们都想知道她为什么甩了这么好的一个男人。

452.A bicycle will rust if you leave it in the rain.如果你把自行车留在雨中，它会生锈的。

453.There are fifty states in the United States.美国有50个州。

454.It is not easy to learn a foreign language.学会一门外语不容易。

455.In a crisis, you must get in touch with your teacher.在危险的时候你必须跟你的老师联系。

456.To the best of my knowledge, the rumor is not true.据我所知，这个谣言不是真的。

457.He crashed his car because someone tampered with the brakes.他撞车是因为有人在刹车上做了手脚。

458.I met him just as he was coming out of school.正当他从学校回来的时候，我遇见了他。

459.I know an English teacher who comes from Canada.我认识一个加拿大来的英语教师。

460.If you can't have children, you could always adopt.如果你不能有孩子，你总能领养。