问题
选择题
________ has been mentioned above，continued chairman after he took a sip of coffee，________ the project must be carried out before spring flood comes.
A．As；that
B．That；which
C．This；which
D．It；that
答案
答案：A
“________ has been mentioned above”是定语从句，而“________ the project must be carried out before spring flood comes.”是动词continued的宾语从句，宾语从句中句意和结构都完整，故选that，结合第一个空，得答案A。