6. Vitamin B could help _____ the effects of the most dangerous type of air pollution, according to a
new study published in March.
(A) convulse (B) mitigate (C) allot (D) decry
(A) convulse -to cause suddenviolentlyshake (B) mitigate -ameliorate, pacify, mollify, appease (C) allot -allocate: to give sb. a share of sth. for purpose (D) decry -condemn; to criticize