猩红热病人应隔离到
A.体温正常B.症状消失C.青霉素治疗后10天D.咽拭子培养3次阴性后E.症状完全消失1周,咽拭子培养3次阴性后
参考答案:E
The fact that she can't talk makes ________ difficult for her to communicate with her new classmates.
A.so
B.much
C.such
D.it
自助设备的报废编号为“BB20100722-12345678”,其中第二个“B”表示()
A.BSM
B.CRS
C.整机
D.部分