earn / make / get a living 谋生

lead / live a ... life 过着......的生活

6. It is believed that before long the mix of nationalities will be so great that there will be no distinct major racial or cultural groups, ...

人们认为很快民族就会大融合在一起，从而没有了非常明显的主要种族或文化群体之分。

[分析]

a. it is believed that ... 表示"人们认为 ......"，其中it是形式主语，真正的主语是后面的that从句。

b. so ... that ... 如此......以至于......，其中 that引导结果状语从句。

mix vt. / vi. 混合、掺和 (combine ... so that they can't be separated)

mix A with B

1) He mixed red paint with yellow paint to make orange paint.

2) It is better to mix work with pleasure.

3) Oil doesn't mix with water.

◆ 联想记忆：

mixture n. 混合物

mixed adj. 混合的, 复杂的, 男女混合的

e.g. The city is a mixture of ancient and modern buildings.

Hearing the news, I had mixed feelings.

A mixed society includes people of different classes, tastes, etc.

nationality 国籍, 民族

1) - What is your nationality?

- I'm Chinese.

2) to take American nationality 加入美国国籍

7. ..., which today still keeps up their Danish culture.

阅读下列句子，观察keep up在句中的意思。

1) Today the people in the village still keep up their original culture.

沿袭（风俗、传统等）

2) The snowstorm kept up for five days.

保持，持续

3) Those houses are so strongly built that they would keep up even in a violent earthquake. 保住

4) I see you're getting along well with your English studies. Splendid! You must keep up the good work. 坚持，维持

联想

keep up with 跟上，不落在......后面；了解；保持联系

keep off 挡住；（使）避开

keep on 继续（干）；坚持（干）

They could not keep up with us when we climbed the mountain.

爬山的时候，他们跟不上我们。

She held an old piece of cloth over them both to keep the rain off.

她把一块旧布料披在他们身上挡雨。

You just have to keep on trying.

Step II Sentences

1. Exactly when the first people arrived in what we now know as California, no one really knows.