发展社会主义市场经济,初次分配和再分配都要兼顾效率与公平,既要提高效率,又要促进公平。关于效率与公平,下列说法中正确的是( )
Your story is perfect; I've never heard _______ before.
They have already_______ themselves for the travel.
When you meet new words while reading, you can _______your dictionary.
If your baby has a fever, you should take him to see a doctor_______.
-- How do you want to post it? -- It is only printed matter; ______mail is OK