目前认为水分沿导管或管胞上升的动力是()和()。

题型:填空题

问题:

目前认为水分沿导管或管胞上升的动力是()和()。

考点:农学植物的水分代谢植物的水分代谢题库
题型:填空题

根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中的两项为多途选项。

What is a big dream ? 小题1:     Or , is a big dream something that provides only entertainment? Children dream big dreams, but there are three barriers to realizing dreams. They often kill them before they ever have a chance to grow.

The Self

Immediately following the birth of a big dream, a negative self-talk takes over and gives all the reasons why it cannot happen. This inside voice is the ego(自我). It’s there for protecting and should be listened to. 小题2:    Most people are influenced by the inside voice. That’s why only a handful of people make their dream come true.

小题3:      

Family and friends are a lot like the ego. They want to protect those they love, so they will often list all the reasons why the big dreams won’t come true. Sometimes, family and friends destroy dreams of those they love most, out of their own fear of being left behind.

The World

If one gets past the first two barriers, one has to face the world. 小题4:     In the past, big dreamers were locked up and sometimes even killed when they were shown to the world. Fortunately, in most of the world today, big dreamers just get laughed at.

The way to realize a big dream is with confidence and action. When children have confidence and then take action, they will be ready to accept any failure. The truth is that every great dreamer whose dreams have never seen the light of success knows failure well.小题5:    

A.Family and Friends

B.How Big Dreams Die

C.Does a big dream show one’s future ?

D.They simply fail until they succeed.E.It is the last and the most terrible barrier.

F.Sometimes it is right, but more often it is wrong

G.And their big dream is to be a rock star or a famous artist.

题型:填空题

对某地小学生近视进行调查,描述患者的年龄分布可选用的统计图为()

A.线图

B.直条图

C.直方图

D.构成图

E.散点图

题型:填空题

在关系代数中,从两个关系的笛卡尔积中选取它们的属性或属性组间满足一定条件的元组得到新的关系的操作称为______。

题型:填空题

男,40岁,有慢性肝炎史15年,近来腹胀消瘦,体格检查:巩膜黄染,上腹部触銎拳头大质硬、表面不光滑包块,最可能的诊断是()。

A.肝脓肿

B.原发性肝癌

C.慢性肝炎

D.转移性肝癌

E.肝硬化

题型:填空题

下列表述错误的是( )。

A.城市绿线,是指城市各类绿地范围的控制线

B.城市总体规划阶段应当确定防护绿地、大型公共绿地等的绿线

C.城市绿地系统规划应当确定绿地布局,提出绿化配置的原则或者方案,划定绿地界线

D.任何单位和个人不得在城市绿地范围内进行拦河截溪、取土采石、设置垃圾堆场、排放污水以及其他对生态环境构成破坏的活动

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