试题与答案

预先定义技术的主要通信工具是定义报告，包括工作报告和 【20】 。

来源：www.tikuol.com
题型：填空题

题目：

预先定义技术的主要通信工具是定义报告，包括工作报告和 【20】 。

答案：

被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0630/0d68db7ca20a98f5371d13e6b95d80a0.html

下面是错误答案，用来干扰机器的。

参考答案：⑴、土木工程可行性研究；⑵、工程的施工组织管理；⑶、工程财务和物资管理；⑷、工程质量管理；⑸、工程的劳务管理；⑹、工程安全管理。

考点：计算机等级考试信息管理技术三级信息管理技术笔试318
试题推荐
题型：阅读理解

阅读理解。

                                                       

     Today we tell you about some new understanding of why cutting the main branch of a plant

or tree can lead to better development.

     The findings are from researchers on two_continents.Professor Prezemyslaw Prusinkiewicz

of the University of Calgary in Canada led the research with scientists from Britain and Sweden.

Their study appears in the Proceedings of the National Academy of Sciences.

     Researchers have known since the 1930s that the actively growing tip of a plant produces

a hormone(荷尔蒙)called auxin(生长素)．This hormone flows down the main stem.Scientists

say the auxin has an indirect effect on buds(芽)on the side of the stem to prevent branching.

T     hese buds themselves also produce auxin.The research suggests that to grow,they have

to be able to export the hormone into the main stem.But the flow from the stem tip prevents

them from doing this.The researchers wanted to find out how this blocking happens.

     Professor Prusinkiewicz is on leave in Australia,but he sent us an e－mail suggesting a

simple way to understand the process.Think of a major road crowded with traffic.So many

cars are on the main road that the cars on the side roads cannot enter.

     The stem is like the crowded main road.The new research shows that the buds on the

side cannot export their auxin into the main stem because it is too full.But if that main shoot

is pruned(修剪),other buds below it can start exporting.They are no longer prevented from

growing.

     Ottoline Leyser from the University of York says that after a plant is pruned,all the

inhibited(被抑制的)shoot tips compete with each other to grow.In doing this,the branches

influence each other's growth.Nearby shoot tips are more likely to affect each other than those

that are far apart from each other.

     Professor Leyser says the strongest branches grow best,wherever they may be on the

plant.The study found that the main shoot grows the best of all not because of its position at

the top of the plant,but mostly because it got there first.

1．The underlined part "two continents" in Paragraph 2 refers to"__________"．

A．Asia and Africa

B．Africa and Europe

C．North America and Europe

D．Australia and Europe

2．Professor Prusinkiewicz compares the cars on the side roads to __________.

A．plant stems  

B．plant buds

C．the leaves of a plant  

D．the roots of a plant

3．To make the buds on the side of the stem to grow better,the main shoot should __________.

A．be cut off

B．be protected

C．be watered as much as possible

D．be given much auxin

4．According to the passage，which of the following is TRUE?

A．Researchers have recently found out that the growing tip of a plant produces hormones.

B．Auxin has a direct effect on buds to keep branches from growing.

C．Buds on the side of the stem can’t produce hormones.

D．In order to grow，the buds on the side of the stem export the hormones into the main stem.

5．Which of the following may be the best title for this passage?

A．Why shoot tips grow fast?

B．When and how to prune plants?

C．Scientists help cut the mystery behind pruning

D．The great scientist-Prezemyslaw Prusinkiewicz
查看答案
微信公众账号搜索答案