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All (1)_______ things must fight to stay alive. They have to feed on someth... 【阅读全文】

Mr. Black worked as a clerk in a big bank in England. Every day he went to ... 【阅读全文】

Residents in a growing number of cities in North China are suffering fromin... 【阅读全文】

In China it is relatively usual to ask people their age,but in the west thi... 【阅读全文】

For reasons of safety and ease of maintenance, Washington and dozens of oth... 【阅读全文】

Directions: There are 10 blanks in the following passage. For each blank th... 【阅读全文】

By the time l finished high school, my interest in animals had grown, and l... 【阅读全文】

I have a friend who put her career on hold after she got married and had ch... 【阅读全文】