下列腹腔镜在腹部外科的临床应用范围，不包括（）. A.腹腔镜探查诊断术 B.腹腔镜胆

小明用如图所示电路测量某电路元件盒中未知电阻Rx的阻值，已知未知电阻R_x的阻值不小于5Ω，电源由两节干电池组成，除了开关、导线外，可供使用的实验器材有：电压表（量程0﹣15V，0﹣3V），电流表（量程0﹣3A，0﹣0.6A），滑动变阻器R（20Ω，1A），阻值已知且大小不等的定值电阻R1和R2．

（1）为完成此实验，电压表的量程应选择          V，电流表的量程应选择        A．

（2）实验中移动滑动变阻器的滑片，当电流表的示数是0.14A时，电压表的示数是2.1V，当电流表的示数是0.2A时，电压表的示数是1.8V，电路元件盒中电源电压是          V，未知电阻Rx的阻值是      Ω．

（3）小明的同学利用上述器材，还设计了测量位置电阻Rx的四种实验电路，其中无法测出未知电阻Rx的是            ．

运用市场比较法所必须遵循的合法性具有的两个方面的含义是()

A.交易案例与待估房地产的适用法律背景可以有一定差别

B.交易案例与待估房地产的适用法律背景基本相似

C.所选取的交易案例必须在法律允许范围之内

D.没有土地使用证的房地产也可以

E.交易案例与待估房地产的土地用途、容积率限制、建筑物高度限制等可有较大差别

Part 4

Questions 26-45

·Read the following passage and decide which answer best fits each space.
·For questions 26-45, mark one letter A, B, C or D on the Answer Sheet.
Participation (26) high school sports is not a constitutional right. (27) , it is a privilege, paid for by taxpayers, open to students who promise to (28) certain conduct requirements on and off the field. One of these promises is to (29) from using drugs. Drug use is a serious problem among high school students. Studies show that as many as 500, 000 high school students use muscle-pumping, life-destroying substances such as steroids. Many more use illegal drugs, (30) cause discipline problems and (31) the stage for lifelong (32) .
Drug testing works to (33) and identify use. That is why drug testing is required to compete in the Olympics, the National Collegiate Athletic Association and the National Football League. (34) drug testing was instituted by these organizations, use of performance- (35) drugs has been greatly reduced. We should want (36) in schools.
Indeed, many athletes (37) testing programs, and no wonder. Without testing, athletes have to choose between drug use and a competitive disadvantage (38) the field.
Those who challenge the need for drug testing may be forgetting (39) it is like be an adolescent. Peer pressure is enormous, and one of the few effective counter-weights is the fear of being caught. More importantly, once drug use is (40) , a school can (41) to the student before he or she gets addicted or arrested.
For 25 years, public schools (42) by federal judges and civil libertarians, with results everyone can see. It is time (43) decisions on how to run public schools locally (44) officials. There is nothing unconstitutional about asking those who gain the advantages of school-sponsored athletics to contribute to the safety of other players, the integrity of the game and their own well-being. The Supreme Court should leave these programs (45) .

A．addictions

B．conditions

C．addition

D．indulgence

对工作票负责人的基本要求有哪些？

阅读材料，回答下列问题。

材料一

材料二A河干支流水量的季节变化

材料三甲圆人口约1.94亿（2011年），分布极不平衡，绝大多数分布在东南沿海地区，且高度集中在少数几个大城市。近年来，该国出现人口由沿海地区向中西部内地和中小城市迁移的趋势，这些市镇辖区的经济正在向农业、商业、石油开采以及劳动密集型的建筑业转型。

简析甲国近年来人口迁移的主要原因。