未知题型 Which of the following statements is true according to Paragraph 3?A．Go was a strategic contest invented in China long ago.B．Stones of Go could be placed on everywhere of a grid.C．The play of Go is too complex to win.D．People often don't know who wins a play of Go.

判断题 “学者散文”的出现，显示了知识分子关注现实问题和参与文化交流的新的趋向。()

未知题型 Which of the following is true about the CALERIE study?A．It proves that calorie restriction works in humans.B．It has 24 male subjects and the same number of female ones.C．It is the first investigation into the effects of calorie restriction.D．It lasted for six months and had the final results published.