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(单选题)The author’s biggest worry about using nuclear energy is tha (单选题)Large member countries like China and the U. S. ______. (单选题)What did President Roosevelt have to do with the United Nati (单选题)Which of the following is true as to the essential functions (单选题)When did the U. N. come into existence? (单选题)Under its Charter, the first stated aim of the U. N. was ___ (单选题)What would be the best title for this passage? (单选题)It can be concluded from the passage that mother ______. (单选题)According to the passage, a woman who divorces her husband w (单选题)The passage suggests that local schools ______.