关于水痘和带状疱疹的说法正确的是（）
A.同一病毒致病
B.抵抗力低下时导致水痘
C.愈后均遗留瘢痕
D.无获得性免疫力
参考答案：A
单词拼写。
1. The doctor says I've got to go on a d ______.
2. It's difficult to keep one's b______ on an icy pavement.
3. The little boy would like to eat f______ chicken.
4. He gave in to c______ and opened the letter addressed to his sister.
5. He was l______ — What he said is not true!
如果某保险公司的实有资本金加公积金总额为1亿元，在有分保手段的情况下，（）万元的危险单位可以承保。
A.1000
B.2000
C.3000
D.4000
