2. Educators have a(n) to prepare students for jobs that only humans can perform.

Work ______ is the key to promotion. A: perform B: performance C: performing D: to perform

traditionally, teachers allow students to practise a role－play in pairs before asking a few pairs to perform. in front of the entire class. （)

Next Monday is Mary’s birthday. She _____（perform）magic at the birthday party. A: will perform B: performs

They entertained the guests with ( __ ) (perform).

Praise must be used wisely to _______ students who perform up to expectations and to encourage students to perform to maximum levels.

The principles for machining sequence of each surface should be( )<br/>and perform rough machining before finish machining. A: perform datum surface machining before that of other surfaces B: perform main functional surface machining before less important surface machining C: perform plane surface machining before hole surface machining D: perform complex surface machining before simple surface machining

Educators have a(n) to prepare students for jobs that only humans can perform. A: transformed B: obligation C: emerge D: agility

You are managing a 24*7 database. The backup strategy for the database is to perform user-managed backups. Identify two prerequisites to perform the backups.（）

A computer is a machine' designed to（） A: perform work mathematically B: perform complicated calculations C: store and select information D: all of the above