A:热忱(chén)干涸(kū)相得益彰(zhāng)
B:宽恕(shù)天堑(qiàn)鳞次栉比(jié)
C:拮据(jū)匀称(chèng)惟妙惟肖(xiào)
D:娴熟(xián)阔绰(chuò)吹毛求疵(cī)
Many countries in the world have reached an ____ to reduce air pollution. (agree)