Question

Some Math problems are        difficult for the students         work out.

A．so, that

B．not, but

C．such, that

D．too, to

Answer 1

D

试题分析：句意：一些数学难题对于学生太难而算不出来。so…that such…that ,如此……以至于……。that后加从句。not,but。不是……而是。too,to太……而不做……。根据句意，故选D。