单选题When did scientists come to realize how the atoms and molecules on the Earth mostlikely combined to make living things?

单选题I can still remember the city ______ my mother and I used to live.

单选题Conversation 1Questions 6 and 7 are based on the following conversation.

单选题The China Travel Service (or the CTS) (中国旅行社，简称“中旅社”), the first travel service of New China, is now one of the key elements in China's travel industry. It boasts the largest travel service with the most complete and fully-functioning network in the country. Currently the CTS group has over 200 subordinate travel services, 117 hotels, 46 duty free shopping centers and 62 tourist service companies all over China.

单选题The heart is an important organ of circulation ______ function is to pump. blood to all parts of the body.

单选题Will you need an experienced desk clerk for your hotel next summer? A.下年夏季你是否有经验为您旅馆设一名办公室经理? B.您旅馆下一夏季想找一名有经历的前台领班吗? C.来年夏季你旅馆是否有经验想招收一名前台服务员? D.不知贵旅馆明年夏天是否需要一名有经验的前台服务员?

单选题______ you choose to contact us, you can expect our efficient and helpful service.

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单选题So seriously ______ by the woman"s sharp words that he was in low spirits.

单选题Hurry up. ______ with so many passengers.

单选题The French shake hands with everyone (family, children, strangers), at home, on the way to work, at work, on the way home from work, etc. Thus, in an office that employs perhaps a dozen people, no work will be done for the first half hour, while those who have not met that day remind each other who they are. However, it is important to remember with whom one has shaken hands on any one day. The French regard it as extremely bad manners to shake hands twice, as though one had not taken adequate notice the first time. It is still the custom to say "Bonjour (how are you)" and "Au revoir (goodbye)" to one and all when entering or leaving a shop or bar. This is not because the French are excessively polite. It is because they see acknowledging the existence of others as a way of avoiding being rude. For the French manners means civilization. Without rigid formalities (严格的礼节), the primitive in them would assuredly assert itself (表露). Kissing is not so much a feature of French life as others suppose. But when it does take place, it must be done properly, according to the rules. The correct order is left cheek, right cheek, left cheek—very formal, very stylized (程式化的). In Paris four kisses are sometimes permitted: left, right, left, right.

单选题He felt it rather difficult to take a stand against the opinion of the majority.

单选题The proposal______at the meeting now is of great importance to our department． A. being discussed B. to be discussing C. having discussed D. discussing

单选题He has a large collection of books, many of which are written in English．

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单选题Melbourne, with a population of over 3.5 million, is the second largest city in Australia. It is clean, safe, dynamic and exciting, and well known internationally for its universities and other educational institutions. The city has well-planned tree-lined beautiful parks and gardens. It has a good transport system of roads, buses, trains, and trams (电车). The La Trobe University (拉特罗布大学) campus is connected to the Central Business District by trams, express buses, and bus and train connections. Melbourne is a culturally rich city, and is home to large communities of people from all parts of Europe, the Americas, Africa, and Asia. The city is famous for its restaurants, theatres, music, opera, ballet, art, culture, and shops, and a lively and dynamic nightlife. Melbourne people are enthusiastic about sports, and the city hosts many famous international sports events. Near Melbourne there are beautiful coastlines with excellent beaches, national parks, forests, wineries (葡萄酒厂), winter snowfields and summer resorts. The climate is temperate and comfortable, with warm summers and cool winters. In summer, maximum daytime temperatures range from 26℃to 36℃, and in winter from 12℃ to 18℃. The weather in Melbourne can be variable from day to day. In 2002, Melbourne was rated the world's best city to live in by the Economist Intelligence Unit.

单选题Insurance (保险) is the sharing of risks. Nearly everyone is exposed to risk of some sort. The house owner, for example, knows that his property can be damaged by fire; the ship-owner knows that his vessel may be lost at sea; the breadwinner knows that he may die at any early age and leave his family poorer. On the other hand, not every house is damaged by fire nor every vessel lost at sea. If these persons, each put a small sum into a pool, there will be enough to meet the needs of the few who do suffer loss. In other words, the losses of the few are met from the contributions of the many. This is the basis of insurance. Those who pay the contribution are known as insured and those who administer(管理) the pool of contributions as insurers. The legal basis of all insurance is the policy. This is a printed form of contract on stout paper of the best quality. It states that in return for the regular payment by the insured of a named sum of money, called the premium(保险费) , which is usually paid every year, the insurer will pay a sum of money or compensation for loss, if the risk or event insured against actually happens. The premium for an insurance naturally depends upon how likely the risk is to happen, as suggested by past experience. If companies fix their premiums too nigh, there will be more to make the premium too low, they will lose money and may even have to drop out of business. So the ordinary forces of supply and demand keep premiums at a level satisfactory to both the insurer and the insured.

单选题Shorthanded ______ they were, they beat the enemy. A. as B. should C. that D. even

单选题Do you know how to use a mobile phone (手机) without being rude to the people around you? Talking during a performance irritates (激怒) people. If you are expecting an emergency call, sit near the exit doors and set your phone to vibrate (振动). When your mobile phone vibrates, you can leave quietly and let the others enjoy the performance. Think twice before using mobile phones in elevators, museums, churches or other indoor public places—especially enclosed spaces. Would you want to listen to someone's conversation in these places? Worse yet, how would you feel if a mobile phone rang suddenly during a funeral! It happens more often than you think. Avoid these embarrassing situations by making sure your mobile phone is switched off. When eating at a restaurant with friends, don't place your mobile phone on the table. This conveys the message that your phone calls are more important than those around you. Mobile phones have sensitive microphones that allow you to speak at the volume you would on a regular phone. This enables you to speak quietly so that others won't hear the details of your conversations. If you are calling from a noisy area, use your hand to direct your voice into the microphone. Many people believe that they can't live without their mobile phone. Owning a mobile phone definitely makes life more convenient, but limit your conversations to urgent ones and save the personal calls until you are at home.