下列有关物质的用途的叙述正确的是 A．可用铝制容器盛装稀硫_爱下问搜题

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问题选择题

下列有关物质的用途的叙述正确的是

A．可用铝制容器盛装稀硫酸

B．Na₂O₂可用于呼吸面具中作为氧气的来源

C．FeO常用于制造红色油漆和涂料

D．SiO₂可用于制造太阳能电池

答案

答案：B

题目分析：铝能和稀硫酸反应，A不正确；过氧化钠能和CO₂或水蒸气反应生成氧气，可以作为供氧剂，B正确；C不正确，氧化铁常用于制造红色油漆和涂料；D不正确，单质硅可用于制造太阳能电池，答案选B。

点评：该题是高考中的常见考点和题型，属于基础性试题的考查。试题基础性强，侧重对学生基础知识的巩固和训练，有利于培养学生灵活运用基础知识解决实际问题的能力。

完形填空

完形填空（共15小题；每小题1分，计15分）
There was a woman in Detroit, who had two sons. She was worried about them, especially（尤其） the younger one, Ben, because he was not doing well in school. Boys in his class played jokes on him because he seemed so    1   . The mother   2   that she would help her sons to do   3   in school by herself. She told them to go to the Detroit Public Library to   4   a book a week and do a book report for her.
One day, in Ben’s class, the teacher held up a rock and asked   5   anyone knew it. Ben put up his hand and the teacher let him   6   . “Why did Ben raise his hand?” all of his.
   7  whispered and wondered. “He    8 said anything. What could he possibly want to say?” To their surprise, Ben not only   9   the rock, but also said a lot about it. He   10  other rocks in its group and even knew   11  the teacher had found it. The teacher and the other students were   12 . Ben had learned this from doing one of his book   13   .
Later Ben became the   14   student of his class. When he finished high school, he went to Yale University and   15   became one of the best doctors in the United States.

单项选择题

肺炎克雷白杆菌肺炎

A．铁锈色痰
B．红色胶冻状黏稠脓性痰
C．大量恶臭味脓痰
D．棕黄色脓性痰
E．粉红色乳状脓性痰(脓血痰)