问题 单项选择题


以下提供若干个案例,每个案例下设若干个考题。请根据各考题题干所提供的信息,在每题下面的A、B、C、D、E五个备选答案中选择一个最佳答案

2个月男婴,正常分娩,母乳喂养。生后经常腹泻。近2天出现4次,突然两眼斜视,四肢呈阵挛性抽搐伴有发绀,经7~10分钟后,抽搐停止。体温正常,面及口唇色白。

他可能的诊断是

A.中毒性脑病

B.晚发性维生素K1缺乏症

C.癫痫

D.化脓性脑膜炎

E.脑血管畸形

答案

参考答案:B

解析:新生儿出血症(HDN)是由于维生素K缺乏而导致体内某些维生素K依赖凝血因子活性降低的自限性出血性疾病。晚发型:生后1~3个月发病,多见于纯母乳喂养、慢性腹泻、营养不良、长期接受全静脉营养者。除其他部位出血外,几乎均有颅内出血死亡率高,幸存者遗留神经系统后遗症。

阅读理解

阅读理解。

     Too much TV-watching can harm children's ability to learn and even reduce their chances of getting a

college degree, new studies suggest in the latest effort to examine the effects of television on children.

     One of the studies looked at nearly 400 northern California third-graders. Those with TVs in their bedrooms

scored about eight points lower on math and language arts tests than children without bedroom TVs.

     A second study, looking at nearly 1000 grown-ups in New Zealand, found lower education levels among

26-year -olds who had watched lots of TV during childhood.But the results don't prove that TV is the cause

and don't ride out that already poorly motivated youngsters (年轻人) may wash lots of TV.

     Their study measured the TV habits of 26-year-olds between ages 5 and 15. These with college degrees

had watched average of less than two hours of TV per weeknight during childhood compared with an average

of more than 2 1/2 hours those had no education beyond high school.

     In the California study, children with TVs in their rooms but no computer at home scored the lowest while

those with no bedroom TV but who had home computers scored the highest.

     While this study does not prove that bedroom TV sets caused the lower scores, it adds to accumulating

findings that children shouldn't have TVs in their bedrooms.

1. According to the Caledonia study, the low-scoring group might _____. [ ]

A. have watched a lot of TV

B. not be interested ted in math

C. is unable to go to college

D. have had computers in their bedrooms

2. What is the researchers' understanding of the New Zealand study results? [ ]

A. Poorly motivated 26-year-olds watch more TV.

B. Habits of TV watching reduce learning interest.

C. TV watching leads to lower education levels of the 15-year-olds.

D. The connection between TV and education levels is difficult to explain

3. What can we learn from the last two paragraphs? [ ]

A. More time should be spent on computers.

B. Children should be forbidden from watching TV.

C. 'IV sets shouldn't be allowed in children's bedrooms.

D. Further studies on high-achieving students should be done.

4. What would be the best title for this text? [ ]

A. Computers or Television

B. Effects of Television on Children

C. Studies on TV and College Education

D. Television and Children's Learning Habits

判断题