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问题 单项选择题

女，32岁。进餐时与人发生口角后，突觉呼吸困难，查体：呼吸浅表频率达80次／分，无啰音。该患者最可能的诊断是（）

A.癔病

B.气胸

C.心绞痛

D.急性心肌梗死

E.气管异物

答案

参考答案：A

阅读理解

On New Year’s Eve, people in Italy throw out all the old things. So there are chairs, beds, clothes and plates in the trees. In Spain, the New Year comes in more quietly. In the evening people come together to the streets. Each holds a bag of grapes. When twelve o’clock comes, people start eating the grapes. In Japan, people eat noodles on New Year’s Eve. This food is said to bring long life. Early the next morning, some families climb Mount Fuji(富士山). There they watch the first sunrise(日出) of the New Year.

小题1:This story is about New Year’s Eve in_______

A．Italy

B．Spain

C．Japan

D．All of the above小题2:People in Spain welcome New Year by _______after twelve.

A．eating grapes

B．eating noodles

C．throwing the old things

D．watching the sunrise小题3:People in both Spain and Japan _______ to bring in the New Year.

A．throw things away

B．get together

C．eat some food

D．climb a mountain小题4:Japanese climb Mount Fuji to _______

A．look at the stars

B．look for New Year’s wishes

C．see the sun coming up

D．have a rest小题5:The people in _______ hope to get long life from their New Year’s food

A．Japan

B．China

C．Spain

D．Italy
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问答题

如图所示是我们探究杠杆平衡条件的实验装置图．实验结束后，通过分析数据，有的同学指出：杠杆的平衡条件也可以是“动力x支点到动力作用点的距离=阻力x支点到阻力作用点的距离”．平时许多同学也经常用这种观点分析杠杆问题．事实上这种观点是片面的，因为支点到动（阻）力作用点的距离并不总是力臂．请你在本实验的基础上再补充一些器材，通过实验证明杠杆平衡条件在普遍情况下应该是“动力×动力臂=阻力×阻力臂”．

（1）你补充的器材有：______；______．

（2）写出操作步骤．
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