多数南方梨品种成年结果树,结果枝以()为主。
A.短果枝和短果枝群;
B.中果枝;
C.长果枝;
D.中、长果枝
参考答案:A
以下哪一项不符合支原体肺炎的发病特点()
A.高热持续1~3周
B.可伴有心、脑、肝等多脏器受损
C.咳嗽剧烈,痰多且黏稠
D.婴幼儿感染时喘憋症状较突出
E.累及胸膜时可出现中等至大量胸腔积液
---- What do you know about the population of China?
---- It _____ over 1,200 million and 80 percent of it _____ peasants.
A.is; is
B.are; are
C.are; is
D.is; are