My English teacher's humor was ____ make every student burst into laughter.[ ]

A. so as to

B. such as to

C. such that

D. so that

洞室施工测量使用的主要测量仪器有（）

A.经纬仪、水准仪

B.陀螺经纬仪、激光指向仪

C.全站仪

D.视准仪