下列行为不属于法律所禁止的行为的是 [] A．中学生贾某用自制的弹弓把学校的路灯

教育研究者首先必须遵守的原则是( )。

A．自愿原则
B．匿名原则
C．保密原则
D．伦理原则

根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

___小题1:___ But science may have just proved them right because beautiful women are more likely to have daughters than their plainer counterparts, according to a study.

As parents tend to pass on genes that determine looks, this could result in handsome men becoming rather thin on the ground. ___小题2:___ For example, Yasmin Le Bon is signed to the same modelling agency as her daughter Amber, and Jerry Hall's daughters Elizabeth and Georgia Jagger have both taken to the catwalk.

Dr Satoshi Kanazawa, of the London School of Economics, analysed data from a survey of 17,000 babies born in Britain in March 1958 and tracked them throughout their lives. ___小题3:___ When they reached 45, they were asked about the gender of any children they had.

Those rated as attractive were equally likely to have a son or daughter as their first child  but the unattractive sorts were more likely to have a son. ___小题4:___

Dr Kanazawa believes that parents tend to produce children who benefit from their own features. ___小题5:___ So it pays for attractive women to have daughters. But couples blessed with strength and aggression rather than looks are better off having boys, as these characteristics are of more use to males.

A．Women are becoming more beautiful over the generations because attractive women have more children than plain ones.

B．Single girls have always complained that good-looking men are difficult to find.

C．Beauty is of more benefit to a woman than a man.

D．At the age of seven, their attractiveness was rated by their teachers.E.Put another way, the beautiful women were more likely to have daughters.

F.And it may also explain why many models have daughters who follow in their fascinating footsteps.

G.Famously good-looking parents like Tom Cruise and Katie Holmes are more likely to have girls than uglier couples.

前列腺触诊发现前列腺肿大质硬，表面有结节，应考虑为（）

A.良性前列腺肥大

B.急性前列腺炎

C.前列腺结核

D.前列腺癌

E.前列腺增生

下列属于不属于节能技术的是（）

A.通风采光设计

B.带热回收装景的送排风系统

C.太阳能光热系统

D.采用高性能材料