题干

下列关于人体内环境的稳态叙述,错误的是:(   )

A:内环境稳态是指内环境的各种化学成分和理化性质保持相对稳定的状态

B:体液包括细胞内液和细胞外液,其中细胞内液约占1/3,细胞外液占2/3

C:红细胞、淋巴细胞、人的口腔上皮细胞生活的内环境分别是血浆、淋巴、组织液

D:内环境稳态是机体进行正常生命活动的必要条件

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答案(点此获取答案解析)

B

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 Different countries have different customs. When you are in different countries, you should follow their customs.

 In China, it`s impolite to talk when eating dinner. And you`re not supposed to start eating first if there are older people at the table.

Very often people who travel to the United States forget to tip(付小费). It is usual to tip waiters, taxi drivers and porters who help carry your bags. Waiters expect to get a 15% tip on the cost of your meal. Taxi drivers expect about the same amount.

 In England, make sure to stand in line even if there are only two of you. It`s important to respect(尊重) lines there. It`s a good idea to talk about the weather. It`s favorite subject of conversation with the British.

 In Spain(西班牙),it`s a good idea to have a light meal in the afternoon if someone invites you for dinner. People have dinner very late ,and restaurants do not generally open until after 9:00 pm.

 In Saudi Arabia(沙特阿拉伯),men kiss one another on the cheek(脸颊).Your  host may welcome you with a kiss on both cheeks. It is polite for you to do the same.

 In Japan, people usually give personal or business cards to each other when they meet for the first time. When a person gives you a card, don`t put it into your pocket(口袋) as soon as you get it. The person expects you to read it.

 Don`t forget to be careful of your body language to express something in conversations. A kind of body language that is acceptable in one culture may be impolite in another.