Which do you think is ________, health or wealth？

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

《中华人民共和国教育法》规定教育必须为___________服务，必须与___________相结合。

免疫电泳最常用的载体是_____________和__________________。

酶联免疫分析法(ELISA)最常用的酶是__________，其常用底物为__________。

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

Which do you think is _________________important, health or wealth?

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

在以下认证方式中，最常用的认证方式是 ______。

在以下认证方式中，最常用的认证方式是______。

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

建筑工程施工常用的三种组织方式是:___、___、___。