麻腮风疫苗的免疫方式是（）。
A、皮内注射
B、皮下注射
C、口服
D、吸入
参考答案：B
保留整数，表示精确到______位；保留一位小数，表示精确到______位；保留两位小数，表示精确到______位．
Despite the negative image of nuclear energy, actually its public safety risks are no greater than ________ of fossil fuels. [ ]
A. one
B. that
C. them
D. those
