列出你所知的植物病毒病的常见症状类型。
参考答案：
变色、矮化、丛枝、枯斑
Not only _____ a promise, but also _____ it.
A．did he make; he kept
B．he made; he kept
C．does he make; does he keep
D．he has made; has he kept
公司招聘一线员工的标准是什么
