下列关于读者进入现刊阅览室的说法正确的是（）
A.直接进入
B.刷借阅证进入
C.凭学生证进入
参考答案：B
Do you know ______ in Japan? [ ]
A. when nuclear (核) accidents happened
B. when did nuclear accidents happen
C. when nuclear accidents happen
D. when do nuclear accidents happen
