题目

Complete the sentences accordingly with the proper forms of thegiven phrases (with two extra phrases) answer foron a grand scaleto wrap upget throughat the risk ofquantities ofcater toconsist ofbe replaced withtake over a quantity of insist on （1） Therehas been housing development since 1980. （2） Theyonly publish novels which the demand of the mass market. （3） Heis very thorough and always checking everything himself. （4） Theship hit an iceberg and oil were spilling into the sea. （5） sounding ungrateful, I must decline y过度包装既浪费资源又污染环境．据测算，如果全国每年减少10%的过度包装纸用量，那么可减排二氧化碳3120000吨，把数3120000用科学记数法表示为 ．