it is generally believed thought that the chief reason for the increase in populationin developed coutries is not so much the rise in birth rates as the decline in death ratesas a result of the improvement in medical care.8. …causes produces brings about leads to results in …（因果关系）毫无疑问，需求的增长导致了价格的上涨。there is no doubt that the increase in demand causesresults in/leads to the rise inprices.务必熟记的考研英语作文重点句式1. it must be pointed out that it is one of our basic state policies to control populationgrowth while raising the quality of the population. 2. it is has been estimated that the worlds population could reach 6 billion bythe 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 canovercome. 5. as is known man is the product of labour. 6. it is a common saying that man who has a settled purpose will surely succeed. 7. it is clear that the enemy has no desire for peace. 8. it is hard to imagine how edison managed to work twenty hours each day. 9. its hard to say whether the plan is practicable. 10. there is no doubt that you will be helped by others if you have anydifficulties. 11. it seems certain that they have made a series of experiments.

12. it is said that bats have been using radar for millions of years. 13. to tell the truth many mistakes we made could have been avoided. 14. as we know it was not until recently that the problem was solved. 15. it must be admitted that you havent done what you promised to do. 16. in my opinion this computer is different from that one you saw. 17. it is certain that we have a long way to go. 18. all this shows that nothing can prevent us from reaching our aims. 19. as far as we know it took him