问题 多项选择题

导致机车车辆正好从没有开通的道岔上经过的原因有二,分别是:()。

A.信号故障。

B.道岔不正常动作。

C.执行正常计划时按开通信号的显示经过。

D.未获得准许而强行经过。

答案

参考答案:C, D

单项选择题
阅读理解

阅读理解。

     Having a large waistline can almost double your risk of dying prematurely (过早地) even if your body mass

index is within the "normal" range, according to a new study, over 350,000 people across Europe published

Wednesday in the US. magazine, New England Journal of Medicine.

     The study provides strong evidence that storing excess (过量的) fat around the waist poses a significant

health risk, even in people not considered to be overweight obese (极肥胖的). It suggests that doctors should

measure a patient's waistline and their hips as well as their body mass index as part of standard health cheeks,

according to the researchers from Imperial College London, the German Institute of Human Nutrition, and other

research institutions across Europe.

     Comparing subjects with the same body mass index, the risk of premature death increased in a linear fashion

as the waist circumference increased. The risk of premature death was around double for subjects with a larger

waist (more than 120 cm for men and more then 100 cm for women) compared to subjects with a smaller waist

(less than 80cm for men and less than 65cm for women). Body mass index is commonly used to assess (评估)

if a person is of "normal" weight.

     Each 5cm increase in waist circumference increased the mortality risk by 17 percent in men and 13 percent

in women, according to the study.

     An increased risk of mortality (死亡率) may be particularly related to storing fat around the waistline because

fatty tissue in this areas secrete (分泌) cytokines (细胞因子), hormones (荷尔蒙) and metabolically (新陈代谢)

active compounds (混合物) that can contribute to the development of chronic (长期的) diseases, particularly

cardiovascular (心脏血管的) diseases and cancers, suggest the authors.

     Tobias Pischon, the lead author of the paper, said "The most important result of our study is the finding that

not just being overweight, but also the distribution of body fat affects the risk of premature death of each

individual."

1. According to a new study of over 350,000 people across Europe, a person has more risk of dying prematurely, _____.

A. if his body mass index isn't within normal range

B. if he has a large waistline

C. if his body mass index is within normal range

D. if he overweight

2. Which of the following isn't mentioned as part of standard health checks?

A. weight

B. hip

C. body mass index

D. waistline

3. Which of the following is NOT wrong? 

A. Each 5 cm increase in waist circumference increases the same mortality risk in men and women.

B. Body mass index is commonly used to assess (评估) if a person is large waistline.

C. The smaller waistline, the more mortality risk.

D. Large waistline almost doubles risk of dying prematurely.