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单项选择 1. A poet and artist ______ coming to speak to us about Chinese literature and painting this afternoon. A. is B. are C. was D. were 2. USA ______ the United States of America. A. stand for B. stands for C. is stood for D. are stood for 3. Some children tend to be distracted by new things so that they cannot ______ on their study. A. absorb B. attract C. focus D. involve 4. What really matters at a debate is not what you say but the way ______ you say it. A. what B. that C. whether D. it 5. The new tax law will not ______ until next month. A. take effect B. bring into effect C. carry into effect D. be in effect 6. Look at the terrible situation I am in! If only I ______ your advice. A. follow B. had followed C. would follow D. have followed 7. ______ both sides accept the agreement will a lasting peace be established in this region. A. Unless B. As long as | 
