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问题 单项选择题 A1型题

在使用Windows的菜单时，能弹出下级接联菜单的操作是（）。

A.选择了尾部带省略号的菜单项

B.选择了尾部带三角形箭头的菜单项

C.选择了颜色变灰的菜单项

D.选择了前面带圆点记号的菜单项

E.选择了带下划线的菜单项

答案

参考答案：B

完形填空
阅读下面短文，根据短文内容完成表格中所缺信息，每空一词。（共10小题，每小题1分，计10分）
Summer is coming soon. When is the best time for swimming in the day in summer?
If you would like to swim indoors, a good time in the day is the early hours-the body has the most energy to use because the body has woken up and will be ready for all kinds of different activities of the day. The body is going to work with enough energy and therefore a person will feel more comfortable if he swims during the early hours of the day.
Swimming early in the day can also be good for anyone who plans to swim outdoors. The conditions outside will be excellent: the water will not be too cold or too hot, and the air will be just clean and fine. Everything is suitable.
Usually, it is not a good idea to swim later in the day because one’s body is tired after work for a whole day and also the weather conditions can be the worst in the later parts of the day.
However, there are still some exceptions. Different people feel different and one’s body acts differently at different time of the day. When a person is feeling active and is not tired at all after work, it may be a better time to swim for him than for others. If he is alert(警觉的) that time, he is safe in the water.
In a word, the best time can change for every person. The person’s body condition decides when the best time for swimming is.
The best time to  小题1: in summer
In the early hours
of the day
A good time (indoors)
The body has the most energy then.
●After   小题2: up, people are ready for different activities.
●The person will feel more comfortable with   小题3: energy.
 
A good time(小题4: )
The conditions outside will be 小题5: .
●The water is neither too cold nor too hot.
●The  小题6: is clean and fine.
Later in the day
Usually not a good time
●The body feels   小题7: after a day’s work.
●The weather conditions are the   小题8:  during the day.
Exceptions
Later in the day can be a
Good time for some people.
●People’s  小题9: conditions are different.
●The body acts differently at different times of the day.
Conclusion
The best time to swim in the day in summer should be  小题10:  according to the body conditions of the swimmer.
 
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（1）盖斯定律在生产和科学研究中有很重要的意义。有些反应的反应热虽然无法直接测得，但可通过间接的方法测定。现根据下 * * 个热化学反应方程式：

Fe2O3(s)+3CO(g)=2Fe(s)+3CO2(g)        △H＝－24.8kJ·mol－1

3Fe2O3(s)+ CO(g)==2Fe3O4(s)+ CO2(g)    △H＝－47.4kJ·mol－1

Fe3O4(s)+CO(g)==3FeO(s)+CO2(g)      △H＝＋640.5kJ·mol－1

写出CO气体还原FeO固体得到Fe 固体和CO2气体的热化学反应方程式：                  

                                             。

（2）在压强为0.1 MPa条件下,容积为V L某密闭容器中a mol CO与 2a mol H2在催化剂作用下反应生成甲醇：CO(g)+2H2(g) CH3OH(g)；CO的转化率与温度、压强的关系如图所示。

①该反应的△H    0 （填“<”、“>”或“=”）。

②在温度容积不变的情况下，向该密闭容器再 

增加a mol CO与 2a mol H2，达到新平衡时，CO的转化率　     （填“增大”、“减小”或“不变”）。

（3）实验室中配制AgNO3溶液时通常需要向其中加入                      ，目的是                              ； AgCl在水中存在沉淀溶解平衡：

AgCl(s)Ag+(aq)+Cl-(aq)。25oC时，现将足量AgCl分别放入：①l00mL蒸馏水；②l0 0mL 0.2 mol•L-1AgNO3溶液；③100mL 0.1 mol•L-1氯化镁溶液；④100mL 0.1 mol•L-1氯化钠溶液。充分搅拌后，相同温度下Ag+浓度由大到小的顺序是          （填写序号）。
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