正确答案: A
正确
题目:最古老的裸子植物尚未具备裸子植物全部的基本特征。( )
解析:A
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举一反三的答案和解析:
[多选题]下列溶液中微粒的物质的量浓度关系正确的是
室温下,向0.01 mol·L-1NH4HSO4溶液中滴加NaOH溶液至中性:c(Na+)>c(SO2-4)>c >c(OH-)=c(H+)
Na2CO3溶液:c(OH-)-c(H+)=c(HCO3-)+2c(H2CO3)
解析:AC
[单选题]McKay’s flying documents were destroyed in .
[单选题]I was born in New Orleans, Louisiana, a city ( ) name will create a picture of beautiful trees and green grass in our mind.
whose
[单选题]A very B also C seldom D not
not
[单选题]
until after
[单选题]根的木栓形成层最初由( )细胞恢复分裂而形成。
中柱鞘
[单选题]苔藓植物与轮藻的生活史中都有( )。
原丝体时期