Where is the woman now？（）

A．Go to the beach with her friends.
B．Postpone her meeting with professor Johns.
C．See Professor Johns after class.
D．Give a speech in Professor John’s class.

A．仪器器件被用来做技术性工作或进行准确性测量。
B．用来做熟练工作或进行精确测量的器件均是仪器。
C．仪器是用来做技术性工作或进行准确性测量的器件。
D．为了熟练地工作和精确的测量，人们用仪器这种器件。