下列不是有机化合物所具有的基团的是 A．－OH B．－CHO C．－COOH D

阅读短文，根据要求完成下面各小题。

      In October of 2007, we launched Chang'e-1 successfully. It was the first lunar probe (月球探测器) in our

country. It is running well now. Every part of the lunar probe is working well. (1) On November 26, 2007, we

saw the first photo of the moon which was taken by Chang'e — 1. 

      "China has collected all the information in order to draw the first full map of the moon. We have almost

finished the map," said Sun Jiadong, chief designer of our country's lunar probe project. In the near future, we

will be able to see the clear map of the whole moon. We can learn more about the moon. 

      The launch of Chang'e — 1 was the first stage. Then there will be another two stages. They are the launch

of a lunar rover (月球车) for a soft landing and a second rover to collect stones from the moon for

study. (2) 中国计划第一辆月球车于2013年在月球着陆. Lots of Chinese universities and scientific institutes

plan to make their own rovers. The final rover will have the good points of all these rovers.

1. 把划线(1)处译为汉语。

2. China had got all the information to _______ the first full map of the moon. (用适当词填空)

3. How many stages are there in China's lunar probe problem? (回答问题)

4. 从文中找出与"can" 同义的词组。

5. 把划线(2)处译为英语。

如图所示是小华“探究摩擦力大小与什么因素有关”的实验操作过程，重12N的铁块和重3N的木块的大小、形状完全相同，木块表面比铁块表面粗糙．

（1）实验过程中，小华拉着铁块（或木块）做匀速直线运动，此时摩擦力的大小______（填“大于”、“等于”、“小于”）弹簧测力计的示数．在乙图中，和铁块一起匀速运动的木块受到的摩擦力为______N；

（2）比较甲、乙两图，可得到的结论是______；

（3）小华比较甲、丙两图，得出了“接触面越粗糙，滑动摩擦力越大”的结论，你认为她的结论正确吗？答：______，理由是：______；

（4）为了测量摩擦力的大小，应用弹簧测力计沿水平方向______拉动木块，实验中不易做到．为了较准确的测量出摩擦力大小，请你利用现有器材，对实验操作方案提出改进意见：______；

（5）根据乙图中的实验情境，以木块为研究对象，具体阐述运动和静止的相对性______．

飞机减速和空中减速时扰流板如何配合副翼进行横向操纵？

天然水按硬度分为（）。

A、极软水；

B、软水；

C、中等硬度水；

D、硬水。

高级管理人员包括公司的财务负责人、上市公司董事会秘书，经理等，但不包括公司的副经理( )