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to answer your questions one by one.my answer to your first question is...may i answer your second cjuestion first?i have only a partial answer to your question.thank you for that question. this is a challenging question and i39。m afraid i can only provide a partial answer to it. anyway, i39。ll try my best to answer it.repeating or paraphrasing the questionquestioner: have you tried it on human bodies?presenter: this gentleman would like to know whether we have tried this on human bodies.responding to difficult or challenging questionquestion: so what happens if the new budget isn39。t approved?answer (1): we39。ve spent two months preparing the new budget. it39。s a good budget and we39。re confident we39。ll get approval to put it into practice.answer (2): there is too much supposition in the question for me to give a sound answer.the following are some other examples of answers to challenging questions:perhaps in another year or so we can answer that question, because these studies are now in progress.we are now working on this problem and, if you agree, i39。ll answer your question in a few weeks.the only answer i can give at present is to wait a few more years, at which time something better might ultimately e out of all our efforts.i think it will be possible to answer this question when more experiments are pleted.the answer to this question needs further study.i hope i will be able to answer your question later.responding to improper questioni appreciate your interest in my research, but i just don39。t want to talk about it now. let39。s talk