花芽分化
参考答案:
树木的生长点由叶芽状态开始向花芽状态转变的过程,称为花芽分化。
He checked out his composition again and again to make sure that no important points had been_______.[ ]
A.found out
B.run out
C.made out
D.left out
下列关于膀胱肿瘤的描述中,错误的是()
A.少数为鳞癌和腺瘤
B.多为鳞癌和腺癌
C.主要症状是血尿
D.以恶性肿瘤为多,男多于女
E.平片无阳性所见