The rapid growing population is one of the major problems ________ the world．We must keep the number of people ________ growing so fast in order to let our sons and grandsons live a better life．
A.faced; fromB.facing;/C.facing; fromD.faced;/在线课程C
解析：
此处face指“要求某人/某事物的注意，面临”；
keep…from doing阻止，使免于。