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问题 单项选择题 A1/A2型题

男性，27岁。肱骨骨折术后2个月出现桡神经损伤表现，考虑为局部瘢痕形成压迫，欲行神经松解术。手术时关于止血带的应用，正确的是（）

A.因神经受压后已存在血运不良，禁用止血带

B.神经受压已有一段时间，对缺血有一定耐受力，止血带时间可较平时延长20～30分钟

C.为获得清晰视野可使用止血带，但因神经受压后已存在血运不良，止血带时间需减半

D.应用止血带时间首次不超过1小时，松10分钟再用，每次不超过40分钟

E.以上都不是

答案

参考答案：D

解析：神经受压不是由于压迫血运，主要在于压迫神经纤维，且神经对缺血的耐受性强于肌肉，应以肌肉的耐受能力作标准，故应正确使用止血带。

听力题

Are you a _____小题1:___(健康的) child? Bob, a 14-year-old boy, is very unhealthy. He likes to ____小题2:____(乘坐) his father’s car to school. Sometimes he goes to school by __小题3:_(地铁).  He does exercise only __小题4:__( 一次) a week. He likes eating ___小题5:__(垃圾) food very much. This week his parents are in Paris on ___小题6:_____(度假). So he eats lots of unhealthy food every day. Now Bob is badly__小题7:___(生病的) in hospital. The doctor says, “ You should ___小题8:___（经常）do exercise, and have a good _小题9:(饮食) habits. It’s ___小题10:____(重要的) for your health. 
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A How to Use a Painting Knife 使用画刀的方法
Painting with a knife is a bit like putting butter on bread and produces quite a (1) result to a brush. Painting knives are excellent for producing textured, impasto work and (2) areas of flat colour.
What’s the difference between a palette knife and a painting knife
A palette knife is a long, straight spatula that is used (3) mixing paints and scraping a palette clean. They’re made from metal, plastic, or wood and (4) either be completely straight or have a slightly bent handle. A painting knife has (5) large crank in the handle, which takes your hand away from the painting surface. They (6) in numerous shapes(for example pear-, diamond-, or trowel-shaped) and are used for painting (7) of a brush. The edge of the knife is blunt, so that it doesn’t cut the (8) .
·What shape of painting knife should I use
Different shaped painting knives produce different effects. For example, a short blade produces angular strokes (9)a long blade makes it easy to put down sweeps of colour.
·Why can’t I use a palette knife to paint with
You can. Painting (10) just have the advantage of coming in more angular shapes and with sharper points. And (11) larger crank in the handle means there’s less chance of rubbing your knuckles into wet (12) . If you’re unsure whether you’re going to enjoy painting with a knife, first buy a (13) , plastic palette knife and experiment a bit with this before upgrading to a wood-and-metal knife.
·How do I use painting knife
(14) the handle firmly so you’re got good control. Pick up some paint off your palette (15) the tip, as you’d pick up some butter with a knife. Use the side of the (16) to spread paint across your canvas, or press it onto the canvas, as you (17) spread butter across a slice of bread．It’ll seem strange at first as it’s quite (18) to using a brush. Using just the tip of the blade will produce small dots. (19) the edge of the knife down will produce fine lines. Pressing the blade flat down (20) the paint will produce ridges. Scrape back into the paint to reveal underlying layers (called sgraffito).

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