that blood diseases are going to continue, we’ll have to them. A．Assumed; doing

______that blood diseases are going to continue, we’llhave to______ them. 

A．Assumed;doing research at               B．Assuming; doresearch on

C．Assuming; doresearch for                D．Beingassumed; do research on

试题答案

【答案】

B

【解析】

试题