梯形ABCD中，AD∥BC，AB=CD，AC⊥BD，AD+BC=26，求梯形AB

阅读短文，判断句子正(T)误(F)。

      My aunt has a son. His name is Jacky. He's only three years old. He's very naughty (淘气的). Now Jacky

is dirty. He washes his face in the bathroom and takes a bath in the bathtub. He puts his toy into the sink and

brushes the toy with his mother's toothbrush in the sink. Then he thinks the toy is clean and puts it in the

bathtub and plays with it again.

( ) 1. Jacky is a little girl.

( ) 2. Jacky is naughty.

( ) 3. Jacky washes his face.

( ) 4. Jacky takes a shower.

( ) 5. At last, Jacky is clean.

二尖瓣狭窄最有价值的体征是（）

A.二尖瓣面容

B.心尖部第一心音亢进

C.心尖部舒张期隆隆样杂音

D.肺动脉瓣区第二心音亢进

E.右心室肥大

患者，女性，50岁。反复出现尿急、尿频、尿痛伴腰背痛与低热8余年。曾查尿蛋白（+），近半年来出现乏力、纳差、空腹时恶心，偶有呕吐。近日症状再现。尿蛋白（+）、尿沉渣镜检白细胞10～30/HP、红细胞偶见。血尿素氮14.6mmol/L，血肌酐363.6μmol/L。血红蛋白80g/L。除肾功能不全的诊断外还应考虑的疾病是（）

A.慢性肾盂肾炎

B.急性肾盂肾炎并下尿路感染

C.慢性肾炎合并肾盂肾炎

D.慢性肾盂肾炎急性发作

E.慢性肾炎合并膀胱炎

下面语段中画线的词语，使用不恰当的一项是[ ]

　　中国女排和韩国女排在第16届亚运会最后一枚金牌的争夺战中再度碰面。韩国队独占鳌头，赢了两局。中国队在开局不利的情况下，稳扎稳打，最终以3：2逆转对手夺冠。这是一次惊心动魄的逆转，这是一场万众瞩目的激战，我们从中感受到了体育竞技的魅力。

A．独占鳌头

B．稳扎稳打

C．惊心动魄

D．万众瞩目

锅炉护板剖视图中允许钢板用单根粗实线表示。( )