D

 Researchers found that women who had given birth might have a reduced risk of death from several common conditions than those who had not, according to a study released Friday by the Imperial College London (ICL).

The study, led by ICL researchers, was published in the journal BMC Medicine. It investigates the association between the so-called reproductive factors -- such as having children and breastfeeding -- and a woman's risk of death.

Researchers analyzed data from 322,972 women across 10 countries, including the UK, France, Germany and Sweden, with an average age of 50.

Each woman was followed for an average of 12.9 years. During this period, there were 14,383 deaths overall, which included 5,938 deaths from cancer and 2,404 deaths from circulatory system diseases, according to the study.

The team compared reproductive factors with risk of death from several common conditions, such as breast cancer, stroke and heart disease.

The researchers found that women who had given birth had a 20 percent reduced risk of death than those who had not. It was also found that there was a reduced risk of death (eight percent) in women who had breastfed compared to those who did not.

The risk of death from cancer was lower in those that had given birth compared to those that had not. Within this group, the risk was reduced even further in women that gave birth to two or three children in comparison to those who had only one child.

"Hormonal mechanisms may explain the lower risk of death that we observed with breastfeeding, and having given birth, as these factors are associated with changes in hormone levels," said Dr Melissa Merritt from ICL, who led the study.

33. According to the passage, the risk of death from cancer is the lowest in women who _______.

A. have given birth to no child.

B. have given birth to one child.

C. have given birth to more than one child.

D. have breastfed. 

34. According to the research, if a woman has given birth and breastfed, her risk of death will decrease by_____.   

A. 20%          B. 28%           C. 12%         D. 16%

35. Which of the following might be one of the findings of the research?

A. Several common conditions lead to women’s death.

B. Reproductive factors are associated with changes in hormone levels. 

C. Women who have given birth live longer than those who have not.

D. Having children might reduce women’s risk of death from some diseases.

第二节 （共5小题，每小题2分，满分10分）

根据短文内容，从短文后的选项中选出能填入空白处的最佳选项，选项中有两项为多余选项。

If you intend to work with this book seriously, I suggest that you give yourself every advantage by carefully following the laws of learning:

Space your learning.

36     Each session may take one half hour to an hour and a half, depending on the amount of material and on your own speed of learning. Do one or two sessions at a time--three if you’re going strong and are all involved--and always decide when you stop and exactly when you will return.

37    

Everyone learns at a different pace. Fast learners are no better than slow learners--it’s the end result that counts, not the time it takes you to finish.

Review.

When you start a new session, go back to the last exercise of the previous session, cover your answers, and see how much you remember.  38  

Test yourself.

You are not aiming for a grade, or putting your worth on the line, when you take the Comprehensive Tests.   39   You are deciding where repairs have to be made, and especially, you are experiencing a feeling of success at work that is well done.

Use these tests, as well as the abundant drill exercises, as aids to learning. No one is perfect, no one learns in the exact same way or at the same speed as anyone else.   40   And then, give yourself every opportunity to exploit your actual, latent, and potential abilities.

But most important of all, as I will remind you several times throughout this book, develop a schedule and stick to it!

A. Do you have quick recall after a day, or you simply forget everything?

B. This approach works better than any other method for learning words.

C. On the contrary, you are discovering your weaknesses, if any.

D. Every chapter of this book is divided into “sessions.”

E. Real learning goes on only through active participation.

F. Do not rush--go at your own comfortable speed.

G. Find the optimum technique and speed for your unique learning patterns.