单项选择题 Mr.Serf’s handgun _______.
单项选择题 The finding of the study mentioned in this passage is that ______.
单项选择题 The last sentence in Paragraph 1 means that people’s understanding of losing weight ______.
单项选择题 According to the findings of the oregon Research Institute,_______.
单项选择题 There used to be many guys who asserted themselves as all-powerful Chi Kung masters in China.