跨虫期传播
参考答案:
病原体在昆虫不同生命周期的传播(如蛹到成虫)。
用所给单词的适当形式填空。
1. There are two ______(librarian) in our school.
2. He ______(be) to Beijing two times.
3. Yesterday many boys ______(take) trains to Shanghai.
4. What year ______(be) you born?
5. I told my mother I ______(have) an English exam next week.
电子国债资金账户变更交易是指()下国债的托管账户由一张卡变更到另一张卡中。
A.同一客户号下
B.相同的证件号
C.直系亲属间