第1题:
26. What is the talk mainly about?
【解析】全文围绕“肥胖的女性生的孩子更容易发生异常”展开，A选项“肥胖和出生缺陷”符合，故选A。
第2题:
27. Babies whose mothers are obese may have increased chances of the following diseases except?
【解析】文中提到母亲肥胖，婴儿更有可能患有neural tube defects（神经管畸形）、heart defect（心脏缺陷）、cleft lip and palate（唇裂）、water on the brain（脑积水）、problems in the growth of arms and legs（四肢发育问题），而糖尿病是针对母亲本人而言的，故选D。
第3题:
28. According to the WHO, how many people are classified as obese around the world?
【解析】文中提到世界卫生组织将约4亿人归为肥胖，故选C。
第4题:
29. Which of the following can be a suggestion for obese women who plan to have a baby?
【解析】那些做了减重手术的怀孕女性更健康，生的孩子更不容易有先天缺陷。
第5题:
30. According to the talk, what may be the focus of further studies?
【解析】将来的研究焦点可能在于“how obesity may cause these problems”，these problems指先天缺陷。
原文：
Catherine and other colleagues from Britain’s New Castle University combined data from 18 studies (26) to look at the risk of abnormalities of babies whose mothers were obese or overweight. (27) Obese women were nearly twice as likely to have a baby with neural tube defects which are caused by the incomplete development of the brain or spinal cord the study found. For one such defect, spinal bifida (脊柱裂), the risk more than doubled. The researchers also detected increased chances of heart defect, cleft lip and palate, water on the brain(脑积水) and problems in the growth of arms and legs. (28) The World Health Organization classifies around 400 million people around the world as obese, including 20 million under the age of 5, and the number is growing. Obesity raises the risks of diseases such as type II diabetes, heart problems and is a health concern piling pressure on an already overburdened national health system. Recent research has tight weight to other problems during pregnancy. (29) A team from the Round Corporation Think Tank in California reported in 2008 that women who get pregnant after weight loss surgery tend to be healthier and less likely to deliver a baby born with complications compared to obese women. (30) Further study may show how obesity may cause these problems, Juliet at New Castle University researcher who worked on the study said in a telephone interview . Women who are thinking about trying for a baby need to check their own weight first, and then think about seeking help if they are overweight.
