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问题 单项选择题

主要由于克拉维酸具有下列哪种特点使之与阿莫西林等配伍应用

A．抗菌谱广

B．是广谱β－内酰胺酶抑制药

C．可使阿莫西林口服吸收更好

D．可与阿莫西林竞争肾小管分泌

E．可使阿莫西林用量减少毒性降低

答案

参考答案：B

解析：克拉维酸为β-内酰胺酶抑制药，抗菌谱广，但抗菌活性低，与β-内酰胺类抗生素合用时，抗菌作用明显增强。临床使用复方阿莫西林与复方替卞西林，为克拉维酸分别和阿莫西林与替卡西林配伍的制剂。

单项选择题 A3/A4型题

患者，女，55岁。右耳垂下无痛性肿块逐渐缓慢长大6年。触诊肿块界线清楚，活动，约4cm×5cm，表面呈结节状，中等硬度，与皮肤无粘连。

对诊断帮助最小的影像学检查是（）

A.腮腺区CT

B.腮腺MRI

C.腮腺区B超

D.腮腺造影X线摄片检查

E.腮腺X线摄片检查
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单项选择题

Not everyone in the world requires the same amount of living space. The amount of space a person needs around him is a cultural difference, not an economic one. Knowing your own psychological space needs is important because they ply affect your choices, including, for example, the number of bedrooms in the home. If you were brought up in a two child family and both you and your sister or brother had your own bedrooms, the chances are if you have two children or more, that you also will offer separate bedrooms for them. In America, for example, they train people to want to have their own rooms by giving them their own rooms when they are babies. This is very unusual in the world. In many other countries, the baby sleeps in the same bed with his parents or in bed near them.
The space in the home also shows a lot about psychological space needs. Some families gather closer to each other and the size of their house has nothing to do with it. Others have separate little corners where family members go to be alone.
Although it is true that psychological space needs are not decided by economic reasons, they sometimes have to be changed a little because of economic pressure. It is almost impossible, however, to completely change your psychological space needs.

Which of the following is true according to the passage

A．Americans are trained to live in large rooms at birth.
B．Economic situation decides one’s amount of space needs.
C．People in various countries demand different psychological space.
D．Knowing your psychological space needs is important, as it affects your future.
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