问题 单项选择题

20世纪初,德国科学家魏格纳提出大陆漂移说,由于他的学说假设了未经验明的足以使大陆漂移的动力,所以遭到强烈反对。我们现在接受魏格纳的理论,并不是因为我们确认了足以使大陆漂移的动力,而是因为新的仪器最终使我们能够通过观察去确认大陆的移动。
以上事例最好地说明了以下哪一项有关科学的陈述

A.科学的目标是用一个简单和谐的理论去精确地解释自然界的多样性。
B.在对自然界进行数学描述的过程中,科学在识别潜在动力方面已经变得非常精确。
C.借助于统计方法和概率论,科学从对单一现象的描述转向对事物整体的研究。
D.当一理论所假定的事件被确认时,即使没有对该事件形成的原因做出解释,也可以接受该理论。

答案

参考答案:D

解析: 根据题意,我们现在相信魏格纳的理论,只是因为证明了结果(大陆漂移)是存在的,而原因还是尚不可知,故选项D是最佳选项。

阅读理解

Americans like to travel all their yearly holiday. Today,more and more travelers in the United States are spending nights at small houses or inns instead of hotels. They get a room for the night and the breakfast the next morning.

Rooms for the night in private homes with breakfast have been popular with travelers in Europe for many years. In the past five to ten years,these bed­breakfast places have become popular in the United States.Many of these America's bed­and­breakfast inns are old historic buildings.Some bed­breakfast inns have only a few rooms;others are much larger.Some inns do not provide telephones or televisions in the rooms;others do.

Staving at a bed­and­breakfast inn is much different from staying at a hotel.Usually the cost is much less.Staying at an inn is almost like visiting someone's home.The owners are glad to tell about the areas and the interesting places to visit.Many vacationers say that they enjoy the chance to meet local families.

小题1:Americans like to take a holiday trip ________.

A.all the year round

B.for years

C.every year

D.every other year小题2:According to the passage,which of the following is NOT true?

A.Some Americans like to stay at bed­and­breakfast homes instead of at hotels.

B.The bed­and­breakfast inns are private homes opened to vacationers.

C.The bed­and­breakfast inns have been popular in America for a long time.

D.The bed­and­breakfast inn owners provide a morning meal for their visitors and a room for the night.小题3:Why do American travelers prefer staying at bed­and­breakfast inns?

A.It is like visiting someone's home.

B.The money they spend there is much less.

C.They can meet local families.

D.All of the above.小题4:Staying at the bed­and­breakfast inns,________.

A.the travelers needn't pay anything

B.the travelers don't have to pay for the telephone or television

C.the travelers can meet and talk with the local people

D.the owners will show the travelers around the area

单项选择题