Which group of people are most optimistic?
A．Ordinary white Americans.
B．American immigrants.
C．African Americans.
D．The Midwest Americans.

判断题比率量表的零点是绝对的。()

判断题体育锻炼的主要项目有身体素质锻炼和运动能力锻炼。()

未分类题Oh, what a nuisance! It______so easy for me to bring those photographs I wanted to show you, and I have left them on the table at home.A．would have beerB．had beenC．would beD．was

判断题“三环结构说”的核心是世界观。()

未分类题______this information, they sat down again to wait.A．After givenB．On givingC．Having been givenD．After having to give

判断题具有一定倾向性的心理特征的总和称为人格。()

未分类题The passage mainly discusses______.A．the importance of science in human developmentB．the proper ways of teaching children scienceC．the necessity for children to learn scienceD．the correct attitude to science as a subject in primary education

未分类题Which of the following about 'Path to Growth' strategy is true?A．It is hard to carry out.B．It has a glorious history.C．it underlines Unilever's brands.D．It brings high growth.

未分类题The author claims that good science_____.A．defies predictionB．should study the unknownC．should discover scientific truthD．should offer choices rather than prescribe

未分类题The first paragraph intends to tell us______.A．not all technological promises can come trueB．paperless office is a remote dreamC．carbon paper is still with usD．carbon-paperless office is on the way

未分类题The author suggests in the last paragraph that______.A．business model change usually goes against existing lawsB．keeping online content free ensures the success of NewspapersC．metered model has been widely adopted in the Newspaper industryD．online paywalls might be a lifesaver of the Newspaper industry

未分类题To which of the following might Daniele Fanelli agree?A．The frequency and quality of citations reflect the quality of a paper.B．Positive data hinder us from understanding the messy nature of science.C．The competitive environment makes it impossible to publish negative data.D．The present publication culture is adverse to scientific progress.

未分类题Publication of non-confirmatory findings may result in______.A．researchers' bias against confirmatory dataB．the waste of research resourcesC．the acceleration of scientific discoveriesD．a more balanced perspective of individual efforts and teamwork

未分类题Which of the following would be the best title for the text?A．A New View of Hypothesis-driven ResearchB．Criticism of the 'Publish or Perish' CultureC．Respective Values of Negative Data and Positive DataD．An Argument in Favor of Negative Data

未分类题Newspapers criticize Google for______.A．distorting their headline to attract customersB．claiming a share of their advertisement revenuesC．making much decrease in their visitor numberD．tempting readers to challenge their online content