填空题
Complete the summary below using NO MORE THAN THREE WORDS from the passage.Write your answers in boxes 33-39 on your answer sheet.When applying precautionary principle to decide whether to invent a new technology, people should also take into consideration of the【D1】______, along with the usual consideration of【D2】______. For example, though risky and dangerous enough, people still enjoy【D3】______for the excitement it provides. On the other hand, experts believe the future population desperately needs【D4】______in spite of their undefined risks. However, the researches conducted so far have not been directed towards increasing the yield of【D5】______, but to reduce the cost of【D6】______and to bring more profit out of it. In the end, such selfish use of precautionary principle for business and political gain has often led people to【D7】______ science for they believe scientists are not to be trusted.
【D5】（）