题目内容

you'll get the right training and education first,which is really the best way.

A. 对
B. 错

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100 years ago ,80% workers produced goods today only about 20% do.

A. 对
B. 错

With the development of science and teachnology more and more people are leaving longer and longer.

A. 对
B. 错

Organic farming is better _ the environment

A. for
B. at
C. in
D. on

We have no right to consume happiness _producing it.

A. without
B. on
C. in
D. off