问题补充:
It is reported that 70% of people in China are about the food security situation after so many accidents.
A. curious
B. concerned
C. cautious
D. certain
答案:
A. curious
(答案→)B. concerned
C. cautious
D. certain
解析:词义辨析。Curious好奇地;concerned关心的;cautious谨慎地;certain肯定的。句意:据报道70%的中国人在多次事故后非常关注食品安全。选B。be concerned about关注。。。