问题 选择题

下面是小波同学用连线的方式对某一主题内容进行归纳的情况,其中不正确的一组是(  )

选项主题归纳
A元素与物质的组成 组成水的元素-氢元素和氧元素;

地壳中含量最多的元素-氧元素;

空气中含量最多的元素-氮元素;

B微观粒子与物质的构成 金属铜-由Cu原子构成;

氧气-由O2分子构成;

氯化钠-由Na+和Cl-构成;

C物质使用与安全常识 点燃可燃性气体之前-验纯;

汽车到加油站加油-严禁烟火;

使用燃煤炉子取暖-注意室内通风;

D在探究灭火所采取的方法 酒精灯不慎打翻起火-用湿抹布扑盖;

电器因短路起火-用水浇灭;

炒菜时油锅着火-立即盖上锅盖;

A.A

B.B

C.C

D.D

答案

A、水是由氢氧两种元素组成的,地壳中元素含量的排序为氧、硅、铝、铁、钙,空气中元素含量的排序为氮、氧等,所以正确.

B、构成物质的粒子有分子、原子、离子三种,铜是金属,由铜原子构成,氧气是由氧分子构成,氯化钠是由钠离子和氯离子构成的,所以正确.

C、可燃性的气体与空气混合点燃易发生爆炸,点燃可燃性的气体前先检验纯度,加油站的空气中有大量汽油蒸气,遇火发生爆炸,煤燃烧不充分会生成有毒的一氧化碳,造成中毒,所以正确.

D、为了防止触电,电器着火时要先切断电源,再灭火,所以错误.

故选D.

单项选择题
单项选择题

Imagine going to your doctor with a complaint of frequent headaches. Your doctor takes a prescription pad and writes a word on it. The word isn’t "aspirin", it’s "Mozart".

Many kinds of music can stir the imagination and produce p feeling. For some people, romantic composers such as Chopin and Tchaikovsky enhance feelings of love and compassion. Religious and spiritual music can help some people feel peace or lessen their pain. But one musician seems to have a unique ability to heal the human body-Mozart. Scientists have found Mozart’s music to be remarkable in its ability to calm its listeners. It can also increase their perception, and help them express themselves more clearly.

Many amazing cases have been documented using Mozart as a healing aid. For example, a tiny premature baby (早产婴儿) named Krissy, who weighed just 1.5 pound at birth, was on total life support. Doctors thought she had little chance of survival. Her mother insisted on playing Mozart for Krissy, and thinks it saved her daughter’s life. Krissy lived, but she was very small for her age and slower than the average child. At the age of four, she showed an interest in music and her parents gave her violin lessons. To their astonishment, Krissy was able to play musical pieces from memory that were far beyond the ability of an average four-year-old. Playing music helped her improve in all areas of her life.

Other stories have emerged about the effect of Mozart’s music. Officials in Washington State report that new arrivals from Asia learn English more quickly when they listen to Mozart. In Edmonton, Alberta, Canada, Mozart string quartets (弦乐四重奏) in city squares seem to calm pedestrian traffic. Even animals and seemingly inanimate objects respond to Mozart. In France. cows serenaded (对……唱/奏小夜曲) with Mozart give more milk, and in Japan, the yeast used to make sake (日本清酒) is ten times better when it "listens" to Mozart.

Why Mozart, rather than Bach or the Beatles Any kind of music can have an effect on some people. But Mozart has more balance. It isn’t too fast or too slow; it’s just right. Don Campbell. who wrote a book called The Mozart Effect, says, "It’s like food. A hot spicy meal will affect you differently than a sweet dessert. And while you might love these foods, they aren’t good for you to eat every day. You need simple, nutritious food on a steady basis. That’s the way Mozart is. It’s like a nutritionally balanced meal that brings order and harmony to your body. \

According to the passage, Mozart’s music can ().

A. arouse p feelings

B. lessen traffic jams

C. make a person imaginative

D. help improve a person s expressive ability