The author uses Europe from 15th century to 20th century as an example to suggest that_______ .

A . Thesis statement B . Rhetorical questions C . Specific examples D . Direct quotation

A) it’s extremely difficult to consider all the important elements in problem B) success in medical research has its negative effects C) scientists may unknowingly cause destruction to the human race D) it’s unwise to be totally absorbed in research in scientific medicine

A．in toy-making there is a continuity in the use of materials B．even the simplest toys can reflect the progress of technology C．it often takes a long time to introduce new technology into toy-making D．even a simple toy can mirror the artistic tastes of the time 此题为多项选择题。

A．it is an outdoor sport B．it improves our health C．it uses fewer resources D．it is recommended by experts

A．To describe how the differences between Pleistocene and Cambrian quartz reveal information about dating rocks B．To point out that the chemical composition of quartz makes it more difficult to date than other rocks C．To provide an example of how regional differences in rock sequences can make a particular rock difficult to date D．To explain that rocks are difficult to use for dating because their chemical compositions always remain the same over time

A．interviews with authorities in the field of water controls B．opinions and personal observations C．definitions which clarify important terms D．strong arguments and persuasions

A．will cause a lot of people to move to the Rockies B．is not welcomed by most people C．will lead to a violation of personal privacy D．offers a lot of benefits to people

A．To suggest that most of the ancient Greeks were wealthy B．To show that the period was a high point in Greek civilization C．To argue that Greece was the only society with a political system D．To explain why the population of Greece was growing rapidly

A．difficult to make a decision B．difficult to know C．necessary to make a decision D．necessary to know

A) in toy-making there is a continuity in the sue of materials B) even the simplest toys can reflect the progress of technology C) even the simplest toys can reflect the progress of technology D) even a simple toy can mirror the artistic tastes of the time

A．that pitch is not a good example to explain the sex differences in language B．that males should talk in low pitched voices and females in high pitched voices C．that sex differences in language can not be well illustrated D．that sex differences lie in eye or ear of the beholder, rather than in the language

A．her academic record was very strong B．she had gained many qualifications and certificates C．contestants are judged on their physical appearance D．contestants are judged on their education 此题为多项选择题。

A．Going to several different schools is educationally beneficial. B．School vacations interrupt the continuity of the school year. C．Summer school makes the school year too long. D．All of life is an education.

A．difficult to produce in large quantities B．susceptible to many parasites(寄生虫) C．essential to the health of the country D．expensive to gather and transport

A．Governments must pass laws stipulating the conditions of cell phone use. B．Social norms on normal cell phone use need to be adopted. C．Laws on cell phone use must be harmonized with social norms. D．Cell phone use should continue without restrictions.