精选优质文档-倾情为你奉上大学英语六级作文必背的40句话1. It must be pointed out that it is one of our basic State policies to control population growth while raising the quality of the population。2. It is (has been) estimated that the worlds 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
