题目

如图的反应中，甲、乙、丙三种分子的个数比为1︰3︰2，则从图示中获得的信息正确的是        A．生成物一定属于氧化物                      B．原子种类在化学反应中发生了变化        C．该反应不可能是分解反应                   D．乙分子中A与B的原子个数比为1∶2 答案：C     Many scientists find that colours can change people’s feelings. It’s very interesting. Some colours can make people feel relaxed，and some colours can make people feel nervous. Now，this kind of knowledge is being used in many places. For example，school walls are always painted green because green makes students feel relaxed. It is also good for the students’ eyes. Some books are also green or light blue for the same reason. Restaurant owners not only have to know how to make food，but also have to know how to make money. Here are some things they’ve learned from scientific studies. The colour red makes people hungry. Many fast food restaurants have red furniture or walls. Soft colours like pink and light blue make people feel relaxed，so they spend more time eating. Loud music may be nice at first，but it soon makes people want to leave. Hard seats also make customers want to eat quickly and leave. Many restaurants，especially fast food restaurants，use this knowledge to make customers eat faster.5 1.How does the colour green make the students feel？    A.Hungry.                                                                       B.Nervous.5 C.Angry.                                                                         D.Relaxed. 2.How does the colour red make most people feel？    A.Hungry.                                                                       B.Comfortable.5 C.Excited.                                                                       D.Worried. 3.Which colour isn’t mentioned in this passage？    A.Green.                                                                         B.White.5 C.Light blue.                                                                    D.Red. 4.What do many fast food restaurants do？ ①Play loud music.                               ②Play soft music. ③Have hard seats.                               ④Paint their walls red.    A.①②③                                                                        B.①③④5 C.①②④                                                                        D.②③④ 5.What’s the best title for this passage？    A.Colour and restaurant.    B.Use colour to make money.    C.Colour and science.    D.Use colour to change feelings.