此题要求改正所给句中的错误。每题只有一个错误，按下列情况改正：此句多一个词：把多余的词用斜线(＼)划掉，在该句右边横线上写出该词，并也用斜线(＼)划掉。此句缺一个词：在缺词处加一个漏字符号(∧)，在该句右边横线上写出该加的词。此句错一个词：在错的词下划一横线，在该句右边横线上写出改正后的词。注意：此题没有正确的题。
They were in the time to produce carbon, nitrogen, water vapour and other gases.
The earth dissolves harm gases and acids into the oceans and seas.
Its population are increasing rapidly.
According a widely accepted theory, the universe began with a “Big Bang” that threw matter in all directions
People say Vancouver is Canada’s most beautiful city, surround by the mountains and the Pacific Ocean.
She helped improve prison condition and gave prisoners work and education.
By chance I came cross an article about a doctor called Lin Qiaozhi, a specialist in women’s diseases.
I looked carefully at the text and realize that it was intended for women in the countryside.
Dr Yuan is quite satisfying with his life.
As a young man, he saw the great need for increase the rice output.