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

以下选项中不能用于结构分析的软件是？（） A: MIDAS软件 B: PERFORM-3D软件 C: INFOWORKS软件 D: ROBOT软件

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

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

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

The Beethoven's fifth Symphony __ next weekend at the City Theatre. A: is going to perform B: is going to be performed C: will perform D: will be performing

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.

Next Monday is Mary’s birthday. She ________ magic at the birthday party. A: is going to perform B: shall perform C: is performed D: performed

Listening to music at home is one thing,going to hear it______________live is quite another. A: perform B: performing C: to perform D: being performed