
气路系统是由()、()、管路和调速器构成的。


Listen and fill in the blanks with the words you hear.
English learners often feel ___1___ about how to address people properly. Many feel ___2___ asking the question, "What should I call you?" Even native English people find this question ___3___. For example, many women don't know how to ___4___ their boyfriend's mother. On the other hand, some parents don't know what to call their children's teacher.
Why is "What should I call you?" such a difficult question to ask? Perhaps it's because you are asking the other person to ___5___ their status or position in the world in relation to yours. This position may ___6___ age, job, education, religion and even marital status.
In some English speaking countries it is ___7____l for a woman to change her last name when she gets married. However, not all women do. If a woman you know has been recently married do not ___8___ her name will change. You can safely ask, "Are you going by the same name?" This question gets trickier when a woman gets ___9___ or becomes a widow. Some women will change their name back to their maiden name. A widowed woman often keeps her husband's name unless she ___10___. A divorced woman often changes her name back to her maiden name. If you don't know the woman well, wait for her to tell you if her name is changing.
Since English is a language, rather than a culture, it is difficult to teach English learners exactly how to address people. There will always be some people and some professions that require more formality than others. Addressing people in writing has different rules and formalities than in speaking.