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问题 填空题

(8分)以乙烯为原料合成化合物C的流程如下所示：

（1）写出A的结构简式                          。

（2）反应①④的反应类型分别为                  、                      。

（3）写出反应②和④的化学方程式：

②                          ；       ④                             。

答案

（1）（2分）

（2）加成反应（1分） 取代反应（1分）

（3）②2CH3CH2OH+O22CH3CHO+2H2O（2分）

④2CH3COOH+HOCH2—CH2OHCH3COOCH2—CH2OOCCH3+2H2O（2分）

单项选择题

计算机运行过程中，遇到突发事件，要求CPU暂时停止正在运行的程序，转去为突发事件服务，服务完毕，再自动返回原程序继续运行，这个过程叫做中断。发生中断的原因称为中断源，它是 (7) ，中断源都有规定的优先级别，中断屏蔽的作用是 (8) 。

（8）处填（）。

A．不允许响应任何中断

B．改变各中断源响应中断时的优先次序

C．只屏蔽优先级别低的中断

D．只屏蔽优先级别高的中断
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阅读理解

阅读短文，判断正误，正确的写“T”，错误的写“F”。

My name is Daisy. I live with my mother and father in a flat. The flat is on the fifth floor of a tall building. There are 14 floors and a parking garage(车库) in the basement(地下室). My father parks his car there.

Our flat is not in the center of the city. It is 2 miles from the center. My father works in the city, so he goes to work by train every day. He doesn't drive his car. He uses his car only on weekends. Then he takes us into the country or to the beach.

Our flat has three bedrooms. There is a bedroom for my mother and father,one for me and one for my brother. There is a living room, a kitchen and a bathroom. We do not have a garden, but there is a small balcony. There are some plants on the balcony. In summer we often sit out on the balcony because it gets very hot inside the flat. Our flat is small, but we are very happy in it.

小题1: Daisy's flat is on the fifteenth floor.

小题2: Their flat isn't in the middle of the city.

小题3:Daisy's father goes to work by car every day.

小题4:In summer they like sitting out on the balcony because they like staying outside.

小题5:Their flat isn't big, but they live happily in it.
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