已知数列an=2n，前n项和为Sn，若数列{1Sn}的前n项和为Tn，则T201

关于教学过程中学生的间接经验和直接经验，说法错误的是()。

A．学生认识的主要任务是学习间接经验

B．学习间接经验必须以学生个人的直接经验为基础

C．间接经验即学生通过亲自活动、探索获得的经验

D．防止忽视系统知识传授或直接经验积累的偏向

“测量管理、测量复核、测量记录与测量仪器”案例分析与答案考点解析题背景材料：

某高速公路某合同段，由甲承包商承包施工，为了保证测量工作的质量，施工单位制定了以下管理制度：

(1)严格测量复核签认制度：

1)由2—4人组成一个小组共同对监理工程师签认的控制网点测量资料进行核对，核对结果要由工地技术主管审核签认后方可使用；

2)利用已知点进行引测、加点和施工放样前必须坚持“先检测后利用”的原则；

3)测量结束后，由负责测量工作的技术员召集各位测量员共同对测量成果进行复核。

(2)测量记录与资料要分类整理、妥善保管，作为竣工文件的组成部分归档。具体包括如下资料：

1)项目交接桩资料，监理工程师提供的有关测量控制网点、放样数据变更文件。

2)项目及各工点、各工序测量原始记录，观测方案布置图、放样数据计算书。

3)测量内业计算书，测量成果数据图表。

(3)购置如下主要测量仪器和测量工具：

1)主要测量仪器：水准仪、光电测距仪。

2)主要测量工具：量距尺。

问题：

(1)指出上述测量复核签认制度中不当之处，写出正确的做法。

(2)上述测量归档资料是否齐全？若不全请予以补充完善。

(3)再分别写出两种常用的主要测量仪器和测量工具。

对于下图，甲说，这是一只鸟；乙说，这是一只兔。这表明，人的认识结果是由认识主体决定的。

When you want to go shopping, decide how much money you can spend on new clothes, Think about the kind of clothes you really need. Then look for those clothes you really need. Then look for those clothes on sale.

There are labels(标签) inside all new clothes. The labels tell you how to take care of your clothes. The label for a shirt may tell you to wash it in warm water. A sweater label may tell you to wash in cold water. The label on a coat may say “dry clean only”, for washing may ruin this coat. If you do as the directions(说明)on the label, you can keep your clothes looking their best for a long time.

Many clothes today must be dry cleaned. Dry cleaning is expensive. When buying new clothes, check to see if they will need to be dry cleaned. You will save money if you buy clothes that can be washed.

You can save money if you buy clothes that are well-made. Well-made clothes last longer. They look good even after they have been washed many times. Clothes that cost more money are not necessarily better made. They do not always fit better. Sometimes less expensive clothes look and fit better than more expensive clothes.

小题1:If you want to save money, you had better buy clothes that         .

A．don’t fit you

B．don’t last long

C．need to be dry cleaned

D．can be washed小题2:The labels inside the clothes tell you         .

A．how to keep the clothes looking their best

B．how to save money

C．whether the clothes fit you or not

D．where to get the clothes dry cleaned小题3:We learn from the passage that cheaper clothes         .

A．are always worse made

B．must be dry cleaned

C．can not be washed

D．can sometimes fit you better小题4:The best title for the passage should be         .

A．Buy Less Expensive Clothes

B．Taking Enough Money When Shopping

C．Being a Clever Clothes Shopper

D．Choosing the Labels inside New Clothes

下列哪项是流行病学实验研究（）

A.探讨病因的线索

B.分析危险因素暴露的结局

C.评价病例暴露危险因素的比例

D.评价某种预防措施的效果

E.筛查早期患者