植物细胞在生活过程中,能够产生氧气的结构是[ ] A.叶绿体 B.液泡 C.线粒

题型:选择题

问题:

植物细胞在生活过程中,能够产生氧气的结构是[ ]

A.叶绿体

B.液泡

C.线粒体

D.细胞核

考点:光合作用
题型:选择题

Nearly five years before, and with the help by our father, my sister and I planted

Some cherry tomatoes(圣女果)in our back garden. Since then for all these year we had been allowing tomatoes to self-seed where they please. As result, the plants are growing somewhere. The fruits are small in size, but juicy and taste. There are so much that we often share them with our neighbors. Although we allow tomato plants to grow in the same place year after year, but we have never had any disease or insect attack problems. We are growing wonderfully tomatoes at no cost!

题型:选择题

保险代理机构及其分支机构不能经营的业务是( )。

A.销售保险产品

B.相关保险业务的损失勘查和理赔

C.收取保险费

D.开发新的保险产品

题型:选择题

确定软件结构图中每个模块的内部过程和结构是哪个阶段的工作

A.需求分析

B.总体设计

C.详细设计

D.问题定义

题型:选择题

下列种群特征哪一个属于种间关系?()

A.密度效应

B.等级制

C.利他行为

D.捕食作用

题型:选择题

早产儿是()

A.妊娠43周出生,瘦小,伴羊水、胎粪污染

B.妊娠33周出生,出生体重为2300g

C.妊娠37周出生,出生体重为2400g

D.妊娠39周出生,出生体重为3500g

E.妊娠27周出生,出生体重为1800g

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