考博英語作文經典40句式

1. It must be pointed out that it is one of our basic State policies to control pulation growth while raising the quality of the population.
　　2. It is (has been) estimated that the world's population could reach 6 billion by the end of the century.
　　3. It must be kept in mind that there is no secret of success but hard work.
　　4. It can be seen from this that there is no difficulty in the world we can overcome.
　　5. As is known man is the product of labour.