重点讲解：

1.dramatically 显著地，剧烈地

The cost of living has increased dramatically.

生活费用已大幅增长了p7w1*zMY.m)=!wz。

2.opt out of 决定（从...）退出

The rich can opt out of the public school system.

有钱人可以选择退出公立学校体系yldm|U8MTUk^;oumu~n。

3.concern 担心，忧虑

There is growing concern about violence on television.

人们对电视上充斥暴力内容的忧虑日益加重f[|ed&a-iK^Q。

4.contagious 接触传染的

Scarlet fever is highly contagious.

猩红热的接触传染性很强

5.unemployment 失业；失业人数

The state's unemployment rate rose slightly to 7.1 percent last month.

该国的失业率上个月略微上升到7.1%,_@T1vsVPeS+J=opiGF。

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