关于河流的选取，下面哪个说法是不正确的？（） A.大于选取标准，但河流之间间隔较小，

龈沟液

A．是渗出液，来自牙龈结缔组织间液

B．是漏出液，来自牙龈血管

C．是漏出液，来自牙龈结缔组织间液

D．是渗出液，来自牙龈血管

E．以上都不对

下面哪些是原发性输卵管癌的诊断方法（）

A.B超

B.盆腔检查

C. * * 细胞学检查

D.碘试验

E.腹腔镜

在CDMA中，为什么不直接采用频率规划而采用导频偏移量（相位）规划？它与FDMA、TDMA中的频率规划有哪些相同点与不同点？

面对通货膨胀、舟曲泥石流、西南干旱、云南地震等事件的严峻挑战，中央及时作出决策部署，带领广大干部群众万众一心、团结奋斗、沉着应对，保持了社会发展稳定的大局。这说明（）。

A.党具体行使管理国家社会事务的权力

B.党具有执行、贯彻铬项法律、法规、政策的职能

C.党是社会主义建设事业的领导核心

D.党的决策保证了社会发展稳定的大局

However important we may regard school life to be, there is no denying the fact that children spend more time at home than in the classroom. Therefore, the great influence of parents cannot be ignored or discounted by the teacher. They can become p allies of the school personnel or they can consciously or unconsciously hinder and frustrate curricular objectives.

Administrators have been aware of the need to keep parents informed of the newer methods used in schools. Many principals have conducted workshops explaining such matters as the reading readiness program, manuscript writing and developmental mathematics.

Moreover, the classroom teacher, with the permission of the supervisors, can also play an important role in enlightening parents. The informal tea and the many interviews carried on during the year, as well as new ways of reporting pupils’ progress, can significantly aid in achieving a harmonious interplay between school and home.

To illustrate, suppose that a father has been drilling Junior in arithmetic processes night after night. In a friendly interview, the teacher can help the parent sublimate his natural paternal interest into productive channels. He might be persuaded to let Junior participate in discussing the family budget, buying the food, using a yardstick or measuring cup at home, setting the clock, calculating mileage on a trip and engaging in scores of other activities that have a mathematical basis.

If the father follows the advice, it is reasonable to assume that he will soon realize his son is making satisfactory progress in mathematics, and at the same time, enjoying the work.

Too often, however, teachers’ conferences with parents are devoted to petty accounts of children’s misdemeanors, complaints about laziness and poor work habits, and suggestion for penalties and rewards at home.

What is needed is a more creative approach in which the teacher, as a professional adviser, plants ideas in parents’ minds for the best utilization of the many hours that the child spends out of the classroom. In this way, the school and the home join forces in fostering the fullest development of youngsters’ capacities.

It can reasonably be inferred that the author（）

A. is satisfied with present relationships between home and school

B. feels that the traditional program in mathematics is slightly superior to the developmental program

C. believes that schools are woefully lacking in guidance personnel

D. feels that parent-teacher interviews can be made much more constructive than they are at present