问题
选择题
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
答案：B
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。。。