职称英语核心词汇推荐：
bold adj. 大胆的;勇敢的;n. 粗体，黑体;
bomb n. 炸弹，原子弹或核弹v.轰炸;
bone n. 骨;骨头;
book n. 书，书籍 v. 登记，预订，控告;
boom n. 繁荣，隆隆声v. 发隆隆声，迅速增长;
boost v.增加;提高;n.增加;提高;
border n. 边界，边 v. 与s bread/维持生活）;
break n. 休息，破裂v. 打破;违犯损坏;破裂;break into/闯入;强行进入;打断;break out/忽然发生; break through/突破）;
breakdown n. 崩溃，故障;
breakfast n. 早餐;
breast n. 胸;胸脯， 乳房
breath n. 呼吸;气味;
breathe v. 呼吸;
bridge n. 桥，桥牌;
brief adj. 简短的，短暂的;
briefly adv. 暂时地，简要地;
相关词汇题分析：

1. Im sorry to have bothered you with so many questions on such an occasion.
A. interfered B. offended C. impressed D. troubled
D. 分析： trouble bother 使不便， 打搅
interfere with .. /妨碍，打搅
offend sb. with /用冒犯/欺侮某人
impress sb. with /给某人留下了深刻的印象
trouble/bother sb. with sth. 使某人因为而烦恼/费神

2. Children are bound to have some accidents as they grow up.
A. obvious B. indispensable C. certain D. doubtless
C. 分析： bound certain 必然/必定〔后接不定式〕
obvious apparent clear evident 明白的，明显的
indispensable necessary不可缺少的，必需的
doubtless 无疑地，必定， 无疑的

C） It sleeps continuously.
D） It goes to warmer areas.
12. What keeps animals alive during hibernation？
A） The fat stored in their bodies.
B） Their thick fur.
C） Their warm burrows.
D） Their deep sleep.
13. During hibernation， animals breathe
A） normally.
B） at a slower rate.
C） at a faster rate.
D） irregularly.
14. According to the passage， what is migration？
A） Moving from one place to another with the season.
B） Living in burrows in winter.
C） Travelling in the winter months.
D） Leaving one‘s own country for another.
15. How does ermines survive in winter？
A） They leave their cosy burrows and migrate to warmer lands.
B） They sleep soundly inside their burrows in winter. 职称英语核心词汇推荐：
bold adj. 大胆的;勇敢的;n. 粗体，黑体;
bomb n. 炸弹，原子弹或核弹v.轰炸;
bone n. 骨;骨头;
book n. 书，书籍 v. 登记，预订，控告;
boom n. 繁荣，隆隆声v. 发隆隆声，迅速增长;
boost v.增加;提高;n.增加;提高;
border n. 边界，边 v. 与s bread/维持生活）;
break n. 休息，破裂v. 打破;违犯损坏;破裂;break into/闯入;强行进入;打断;break out/忽然发生; break through/突破）;
breakdown n. 崩溃，故障;
breakfast n. 早餐;
breast n. 胸;胸脯， 乳房
breath n. 呼吸;气味;
breathe v. 呼吸;
bridge n. 桥，桥牌;
brief adj. 简短的，短暂的;
briefly adv. 暂时地，简要地;
相关词汇题分析：

1. Im sorry to have bothered you with so many questions on such an occasion.
A. interfered B. offended C. impressed D. troubled
D. 分析： trouble bother 使不便， 打搅
interfere with .. /妨碍，打搅
offend sb. with /用冒犯/欺侮某人
impress sb. with /给某人留下了深刻的印象
trouble/bother sb. with sth. 使某人因为而烦恼/费神

2. Children are bound to have some accidents as they grow up.
A. obvious B. indispensable C. certain D. doubtless
C. 分析： bound certain 必然/必定〔后接不定式〕
obvious apparent clear evident 明白的，明显的
indispensable necessary不可缺少的，必需的
doubtless 无疑地，必定， 无疑的

C） It sleeps continuously.
D） It goes to warmer areas.
12. What keeps animals alive during hibernation？
A） The fat stored in their bodies.
B） Their thick fur.
C） Their warm burrows.
D） Their deep sleep.
13. During hibernation， animals breathe
A） normally.
B） at a slower rate.
C） at a faster rate.
D） irregularly.
14. According to the passage， what is migration？
A） Moving from one place to another with the season.
B） Living in burrows in winter.
C） Travelling in the winter months.
D） Leaving one‘s own country for another.
15. How does ermines survive in winter？
A） They leave their cosy burrows and migrate to warmer lands.
B） They sleep soundly inside their burrows in winter.
C） They dig out burrows and store them with enough food.
D） They stay in their burrows and live on the food stored there.

难度系数： C级
Tipping
In many countries there is a fixed charge for personal services. A certain percentage may be added to the bill at a hotelorrestaurant for the service . In other places the customer may be expected to give a tip，ora small money， as a sign of appreciation whenever services are performed. In the United States there is no consistent practice in regard to tipping. The custom is more common in a large city than in a small town. A native American may often be in doubt about when and how much to tip when he is in a city that is strange to him. In general， however， a tip is expected by the porter who carries your baggage， by taxi drivers ， and by those who serve hotels and restaurants.
When you pick up your incoming luggage at an airport， you may tip the man who takes it to the taxiorairport bus. He usually expects 35 cents a bag for his service. In some cities the taxi that takes you to your hotel may have one meter that shows the cost of the trip and another that shows a fixed charge， usually about 20 cents， for extra . In some cities the taxi diver may expect a tip in addition to the extra ， especially if he carries your suitcase. If no extra is charged， a tip is usually given. Hotels generally do not make a service charge， though there are places where one is added. It is customary， however， to give something to the porter who carries your suitcase and shows you to your room. In case of doubt， 35 cents for each bag he carries is satisfactory. In a restaurant you generally leave about 15 percent of the bill in small change on that table as a tip for the person who has served you. A service charge is generally not included except in some of the larger， more expensive places. If the order is small －－－ a cup of coffee at a lunch counter，orsomething of the sort －－ a tip is not usually expected.
16. According to the passage， the practice of giving tips
A） is consistent throughout the world.
B） varies from place to place in the USA.
C） is consistent in large towns in the USA.
D） is consistent in small towns in the USA.
17. According to the passage， the following are the people one may tip EXCEPT
A） porters.
B） taxi drivers.
C） waiters.
D） cleaners.
18. According to the passage， which of the following is INCORRECT？
A） Extra is a fixed charge in some cities.
B） Extra is similar to a tip in some cases.
C） If the extra is paid， one doesn‘t tip any more.
D） Some hotels require people to pay a service charge.
19. According to the passage， the amount of money for a tip
A） is the same across restaurants and hotels .
B） depends on how much one pays for his meal.
C） generally varies according to the size o