【名词&注释】
次生木质部(secondary xylem)、次生韧皮部(secondary phloem)、报春花属(primula)、蝶形花冠(papilionaceous corolla)、初生木质部(primary xylem)
[单选题]的特征是叶全基生，花葶顶生伞形或复伞形花序。
A. 报春花属(Primula)
B. 点地梅属
C. 珍珠菜属
D. A和B
查看答案&解析
举一反三：
[单选题]My parents ( ) in Hong Kong. They were born there and have never lived anywhere else.
A. live
B. lived
C. were living
D. will live
[单选题]枣(Ziziphus jujuba Mill．)是我国特产，山西是主产省份之一。( )
A. 正确
B. 错误
[单选题]区别根和茎的次生结构应根据( )。
A. 初生韧皮部
B. 初生木质部(primary xylem)
C. 次生韧皮部
D. 次生木质部
[单选题]The best title for the text would be___________.
A. The Origin of Olivetti
B. The Success of Olivetti
C. The History of Olivetti
D. The Producich of Olivetti
[单选题]蚕豆的蝶形花冠中翼瓣上部连合。( )
A. 正确
B. 错误
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