恩格斯说：“人在怎样的程度上学会改变自然界，人的智力就在怎样的程度上发展起来。”

某公司4月份的利润为160万元，要使6月份的利润达到250万元，则平均每月增长的百分率是（    ）。

Reading comprehension.

     We may all have had the embarrassing moment: Getting half-way through a story only to realize that we've

told this exact tale before, to the person we're boring with it now. Why do we make such memory mistakes?

     According to research published in Psychological Science, it may have to do with the way our brains

process different types of memory.

     Researchers Nigel Gopie, of the Rotman Research Institute in Toronto, and Colin MacLeod, of the University

of Waterloo, divided memory into two kinds. The first was source memory, or the ability to keep track of where

information is coming from. The second was destination memory, or the ability to recall whom we have given

information to.

     They found that source memory functions better than destination memory, in part because of the direction

in which that information is travelling.

     To study the differences between source and destination memory, the researchers did an experiment on 60

university students, according to a New York Times report. The students were asked to associate 50 random

(随意的) facts with the faces of 50 famous people. Half of the students "told" each fact to one of the faces,

reading it aloud when the celebrity's picture appeared on a computer screen. The other half read each fact

silently and saw a different celebrity picture afterward.

     When later asked to recall which facts went with which faces, the students who were giving information

out (destination memory) scored about 16 percent lower on memory perfonnance compared with the students

receiving information (source memory).

     The researchers concluded that outgoing information was less associated with its environmental context (背

景) that is, the person-than incoming information.

     This makes sense given what is known about attention. A person who is giving information even little facts,

will devote some mental resources to thinking about what is being said Because our attention is finite (有限的),

we give less attention to the person we are giving information to.

     After a second experiment with another group of 40 students, the researchers concluded that self-focus is

another factor that undermines destination memory.

     They asked half the students to continue giving out random information, while the other told things about

themselves. This time around, those who were talking about themselves did 15 percent worse than those giving

random information.

     "When you start telling these personal facts compared with non-self facts, suddenly destination memory

goes down more, suggesting that it is the self-focus component (成分) that's reducing the memory," Gopie told

Live Science.

1. The point of this article is to _____. [ ]

A. give advice on how to improve memory

B. tell what causes the memory to worsen

C. explain why we repeat stories to the same person

D. introduce different kinds of memories

2. Those who read each fact silently and saw a different celebrity picture afterwards _____.  [ ]

A. can memorize more information

B. have worse memory

C. are more likely to repeat stories

D. paid more attention to themselves

3. The person who is giving information _____. [ ]

A. may receive little facts

B. focuses more on what he is saying

C. has finite attention

D. pays much attention to his own behavior

4. Theunderlinedword "undermines" probably means _____. [ ]

A. Aweakens

B. benefits

C. explains

D. supports

5. What did the scientists conclude from the second experiment? [ ]

A. Destination memory is weaker than source memory.

B. Focusing attention on oneself leads to relatively poor source memory performane.

C. ASSociating personal experience with information helps people memorize better.

D. Self-focus is responsible for giving information twice or more to the same persor.

下列哪种不是肿瘤显像剂（）。

A.^99mTc-MIBI

B.^99mTc（v）-DMSA

C.⁶⁷Ga（枸酸镓）

D.^99mTc-DTPA

E.^99mTc-PPM

(二)

某市甲木制品厂为增值税一般纳税人，2011年8月发生以下业务：
(1)从某林场收购自产原木一批，收购凭证上注明收购价款200000元；
(2)该厂将收购的原木从收购地直接运往异地的乙加工厂生产加工实木复合地板，实木复合地板加工完毕，支付了加工费，取得乙加工厂防伪税控系统开具的增值税专用发票
(当月认证)，注明加工费90000元，代垫辅料价值9600元，乙加工厂当地无同类产品市场价格。收回实木地板验收入库，支付给运输单位的运输费用12000元，取得公路内河货物运输业统一发票；
(3)本月内将委托加工收回的实木复合地板全部直接批发售出，开具增值税专用发票注明销售额400000元；
(4)从另一木制品厂购入未经涂饰的实木地板一批，取得对方开具的增值税专用发票上注明价款为500000元，全部加工成漆饰实木地板出售，取得不含税收入900000元；
(5)月末盘存发现上月从农业生产者手中购进的原木因管理不善腐烂变质，成本48150元(其中含分摊的运输费用4650元)；
(6)本月销售用实木地板的下脚料生产的木制一次性筷子10箱，每箱不含税销售额5000元：
(7)将使用过一年的两辆进口小汽车销售，原购进总价为60万元，开具普通发票上注明价款共计32万元。
(实木地板的消费税税率为5%，成本利润率是5%；木制一次性筷子的消费税税率为5%)
根据上述资料回答下列问题：

乙加工厂应代收代缴的消费税为( )元。

A．12400

B．13400

C．14300

D．14400

纳税评估工作中对某一户纳税人的生产经营情况进行了详细的核算，结果确定该企业会计核算结果确实没利润，因此在年终汇算清缴工作中必须退还该企业的预缴税款。请你谈谈对这一处理决定的看法。