问题
选择题
Children exposed to air pollution are more to suffering from different diseases.
A．possible
B．probable
C．likely
D．certainly
答案
答案：C
单词辨析。句子缺少表语，而D是副词，不能作表语，排除D；possible和probable不能用人作主语，所以选C。sb. be likely to do sth.某人很可能会做某事。