题目

用右图所示装置来进行通电分解水的实验，下列说法错误的是（） A . 试管1中的气体是氢气，试管2中的气体是氧气 B . 电源A端是负极，电源B端是正极 C . 试管1的气体可使带火星的木条复燃 D . 此实验说明水中含有氢、氧两种元素 答案：AFor many years, no one could communicate with people who had been born without hearing. These deaf people were not able to use a spoken language.But, beginning in the 1700s, the deaf were taught a special language. Using the language, they could share thoughts and ideas with others. The language they used was a language without sound. It was a sign language.How did this sign language work? The deaf were taught to make certain movements using their hands, faces, and bodies. These movements stood for things and ideas. People might move their forefingers across their lips. This meant, “You are not telling the truth.” They might tap their chins with three fingers. This meant, “my uncle”.The deaf were also taught to use a finger alphabet(字母表). They used their fingers to make the letters of the alphabet. In this way, they spelled out words. Some deaf people could spell out words at a speed of 130 words per minute.Sign language and finger spelling are not used as much as they once were. Today the deaf are taught to understand others by watching their lips. They are taught how to speak.小题1:In the 1700s, the deaf were taught __________.A．to speakB．to watch othersC．a sign languageD．a spoken language小题2:The word forefingers in paragraph 3 means__________.A．the finger next to the thumb (拇指)B．three fingersC．a language D．hands小题3:On the whole the story is about __________.A．how the deaf communicate B．learning to spellC．teaching the deaf to speak D．writing sign languages小题4:Which of these sentences do you think is RIGHT?A．Deaf people draw signsB．Deaf people can’t use their fingers.C．Many deaf people now can speakD．Deaf people speak with their fingers.