On April 1, Jim tried to play a trick ______ his teacher but the teacher wasn’t taken _____.

A．by; on

B．in; in

C．on; in

D．on; on

在5°C-10°C气温条件下仍可用于施工的耐火材料有()。

A.黏土结合耐火浇注料 

B.水泥耐火浇注料 

C.水玻璃耐火浇注料 

D.耐火泥浆 

E.耐火喷涂料