为了解决我国存在的一些类似于三鹿奶粉等安全事故问题,必须( )①加大依法对市场管理的力度 ②发挥市场对资源配置的基础性作用 ③加强企业的职业道德建设④加强企业之间的竞争
-- I’m sorry we ________ all the educational CD-ROMs. Can you come next week? -- Please call me as soon as the latest one _________.
Mum told me not to drive____ high spead on the busy street.
---Do you mind if I _____ the radio? I can’t hear clearly. ---- ______, my baby is sleeping. A turn on; Yes, I do.B turn off; Not at all C turn up; Better notD turn down; Never mind
----____ have you lived here? ----Since last year.
-- ______did your uncle leave his hometown ?--He ______ for nearly twenty years.