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患者，女性，55岁，8个月来吞咽困难，逐渐加重，近1月来仅能进流食，锁骨上淋巴结未触及肿大。

此患者做上消化道钡餐，可能出现的征象是（）

A.充盈缺损

B.半圆形压迹

C.食管壁僵硬

D.食管黏膜增粗、中断、紊乱

E.鸟嘴征

F.串珠样改变

G.食管管腔狭窄

答案

参考答案：A, C, D, G

完形填空

Things You Can Do to Help the Environment
CARS
Cars are getting bigger. Bigger cars burn more gas and increase problems with air pollution. So try to walk, ride, or take buses or subways. And if you drive a car, keep it in a good state. This can save gas and make less pollution.
Energy
The biggest use of home energy is for heating and cooling. So turn up your air conditioned and ,um down the heat, especially at night. Use energy-saving lights. And remember to turn lights off. 
PRODUCTS
Each American throws away 10 kilograms of litter everyday. Try to make less waste. Ask yourself before you buy something: Do I need it? Buy products that you can use over and over again.
WATER
Showers use a lot of water. In one week, a common American family uses as much water as a person drinks in three years! Take shorter showers or buy a special small showerhead. This can cut water use in half.
 
小题1:Linda always takes long showers in the morning.
__________________________________________________
小题2: Jeff leaves the lights on at home all the time.
__________________________________________________
小题3:Nick buys a newspaper every day, but never reads it.
____________________________________________________
小题4:Gina drives to work, but her office is near her home.
___________________________________________________
小题5:This passage is most probably taken from _______________
A. a magazine   B. a news report   C. a diary
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多项选择题

供电服务质量事件有下列情节之一的（）属于特别重大供电服务质量事件。

A、国家部委有关部门单位查实属供电部门主观责任，并被国家部委有关部门单位行政处罚的供电服务质量事件

B、中央或全国性新闻媒体、主要门户网站等曝光属供电部门主观责任并产生重大负面影响的供电服务质量事件

C、给客户或企业造成50万元及以上直接经济损失

D、公司认定的其他特别重大供电服务质量事件

E、给客户或企业造成20万元及以上50万元以下直接经济损失
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