The passage mainly analyzes the differences between shyness and social phobia as well as the causes behind these two problems.

A．The three benefits provided by trees. B．Trees and soil conservation. C．The various uses of trees. D．The different attitudes of the government and the villagers toward trees.

A．what physical features the giraffe has B．how the giraffe's heart works C．how the giraffes heart pumps blood to its head D．how the giraffes can stand up to high blood pressure

A．To inform. people the severity of the millennium bug. B．To accuse some comes for being inactive. C．To advise people to abandon the computers. D．To tell the readers the way to solve the millennium bug problem.

A．functions of dreams. B．time spent on dreams. C．history of dreams. D．limitations of dreams.

A. to describe how American children spend their summer. B. to explain the needs of the modern working families. C. to discuss the problems of the current school calendar. D. to persuade parents to stay at home to look after their kids.

A．The development of e-mail in the world. B．The advantages of e-mail. C．The popularity of writing in people's life. D．A comparison between e-mail and long-distance calls.

A．The current crisis of the U. N. B．Suggestion on changes in working practices of file U. N. C．Improvement in the efficiency of the U. N. D．The U. N. in the Iraq war.

A．Everybody uses only one form. of communication. B．Nonlinguistic language is very useful to foreigners. C．When a language is a barrier, people will find other forms of communication. D．Although other forms of communication exist, oral speech is .the fastest.

A．Online advertising is more effective than TV advertising. B．Google and Yahoo! are challenging Microsoft in the field of advertising. C．Google's new advertising service could make the internet an even more valuable marketing medium. D．Online advertising is popular with advertisers.

A．Suggestions and techniques to help one better organize his time, study habits and resources. B．Plan or technique that could be labeled as the best and be guaranteed to fit each individual C．Efficient use of time will enable you to include both work and play. D．Activities as if going to school is a business.

A．How to learn foreign languages easily. B．How to apply for studying in France. C．How to prepare for an independent study. D．How to ensure an enjoyable study overseas.

A．a new way of highway speed control B．a new pattern for painting highways C．a new approach to training drivers D．a new type of optical illusion 此题为多项选择题。

A．which metals conduct electricity best B．where to go in a thunderstorm C．how to treat someone struck by lightening D．how to make mouth-to-mouth resuscitation 此题为多项选择题。

A．Commercial production of ice. B．Inventions that led to changes in the American diet C．Causes of food spoilage. D．Population movements in the 19th century. 此题为多项选择题。

A．How to design attractive buildings. B．Architects need to understand public tastes. C．How lay people view buildings. D．Different tastes between architects and the public.

A．To outline contrasting types of economic system. B．To explain the science of economic systems. C．To argue for the superiority of one economic system. D．To compare barter and money-exchange markets.

A．the importance of pre-school education． B．the importance of schoolin9． C．the role of play in a child’S development． D．the choice of toys for adolescents．