膀胱三角的标志为（） A. * * 内口与膀胱底之间 B.输尿管间襞与膀胱尖之间 C. * *

根据课文内容， 完成下列句子，每空词数不限。

                                                                    Liz Smith

     Liz Smith faces many challenges in her daily life because she is a (1) _________ person. Liz  Smith

can't use her (2) _________ well, so normal things have always been difficult for her. Liz  Smith  loves

(3) _________ and she'd love to have a dog. Liz Smith is able to have a "dog-helper" because of Miss

Li's (4) _________. Liz Smith will send (5) _________ if Miss Li likes.

明代诗人曾写过这样一首诗“空手把锄头，步行骑水牛；人在桥上过，桥流水不流．”其中“桥流水不流”是以______为参照物的．

纳税人必须在缴纳有争议的税款后，税务行政复议机关才能受理纳税人的复议申请。这体现了税法适用原则中的()。

A.程序优于实体原则 

B.特别法优于普通法原则 

C.实体从旧、程序从新原则 

D.法律不溯及既往原则

杠杆在生产、生活中有着广泛的应用，如图所示，下列工具中属于费力杠杆的是

A．①、②

B．②、③

C．①、③

D．①、④

粘钢加固法