－ What does the sign over there read － “No person ________ smoke or carry a lighted cigarette, cigar or pipe in this area”

______________ is a measure of incomeor profit divided by the investment required to obtain that income or profit

_______________will not continue if an ongoing operation is changed or deletedA、

29．__________ when you are on the bus or bike．

The desirable properties or a marine fuel oil should include_______.

Which do you think is _________________important, health or wealth?

And they can ______their passports______，making leaving or “escaping” virtually impossible.

A sound which is capable of distinguishing one word or one shape of a word from another in a language is a__________．

Duty is an act or a course of action that people __________you to take by social customs, law or religion.

It is generally considered unwise to give a child___( )_____ he or she wants.

除病毒为_______微生物外，真菌属______型微生物，大部分微生物细胞为_______型微生物。

A ______ copies a photograph, drawing or page of text into the computer.