问题 单项选择题

男,45岁,咳嗽一个月,痰中偶带血丝,查体无特殊发现,正位胸片无异常发现,进一步最适当的诊断程序是()

A.侧位胸片;痰找瘤细胞及结核杆菌;纤维镜检查;胸部CT

B.纤维镜检查;痰找瘤细胞及结核杆菌

C.支气管碘油造影;纤维镜检查

D.经皮动脉插管支气管动脉选择性造影;栓塞治疗

E.放射性核素扫描;纵隔镜检查;胸壁穿刺活组织检查

答案

参考答案:A

阅读理解

Using too much water or throwing rubbish into our rivers are clear ways that humans can put our water supply in danger , but we also affect our water supply in less obvious ways. You may wonder how paving(铺砌) a road can lead to less useable fresh water. A major part of the water we use every day is groundwater. Groundwater does not come from lakes or rivers. It comes from underground. The more roads and parking lots we pave the less water can flow into the ground to become groundwater.

Human activity is not responsible for all water shortages(短缺). Drier climates are of course more likely to have droughts(干旱) than areas with more rainfall, but in any case, good management can help to make sure there is enough water to meet our basic needs.

Thinking about the way we use water every day can make a big difference, too In the United States , a family of four can use 1. 5 tons of water a day! This shows how much we depend on water to live, but there’s a lot we can do to lower the number.

You can take steps to save water in your home. To start with use the same glass for your drinking water all day. Wash it only once a day. Run your dishwasher (洗碗机)only when it is full 。Help your parents fix any leaks in your home. You can even help to keep our water supply clean by recycling batteries instead of throwing them away.

小题1:Which of the following is most likely to lead to less groundwater?

A.Using river water.

B.Throwing batteries away.

C.Paving parking lots.

D.Throwing rubbish into lakes.小题2:What can be inferred from the text?

A.All water shortages are due to human behavior.

B.It takes a lot of effort to meet our water needs.

C.There is much we can do to reduce family size.

D.The average family in America makes proper use of water.小题3:The last paragraph is intended to             .

A.show us how to fix leaks at home

B.tell us how to run a dishwasher

C.prove what drinking glass is best for us

D.suggest what we do to save water at home小题4:The text is mainly about          .

A.Why paving roads reduces our water

B.how much we depend on water to live

C.why droughts occur more in dry climates

D.how human activity affects our water supply

判断题