个人健康保险常用主要条款不包括()。
A.犹豫期条款
B.宽限期条款
C.等待期或事先存在条件条款
D.代为求偿条款
参考答案:D
The CD-Rom helps you learn English _________ your knowledge of English grammar and vocabulary.[ ]
A. to test
B. by testing
C. test
D. with test