为什么要进行矿井瓦斯检查？

风心病二尖瓣狭窄伴严重右心衰竭，下列哪些临床表现不会减轻()

A.下肢水肿

B.肝肿大压痛

C.颈静脉曲张

D.颈静脉曲张

E.呼吸困难

第三部分：阅读理解（共20小题；每小题2分，满分40分）

阅读下列短文，从每题所给的四个选项（A、B、C、D）中，选出最佳选项。

Does your cordless phone crackle (噼噼响) , fade, or go dead when you move only a few feet from the base? If so, we recommend that you try a Techtalk cordless phone.

Techtalk cordless phones arc the only ones with the patented Cellular 6 technology. The result is a phone with excellent clarity, range, and security.

Clarity: It's essential that you communicate efficiently and effectively. No static (静电), echo, or crackling will ever interfere (干扰) with your conversations on a Tcchtalk phone.

Range: Techtalk provides up to four times the range of an ordinary cordless phone. It will go anywhere you need it throughout your home in your yard, even around the Block.

Security: Some cordless phones allow other cordless  phone users to overhear (偷听) your conversations. Not Techtalk. We guarantee (保证) complete privacy whenever you talk to your friends, family , or business associates.

You decide an ordinary cordless phone or Techtalk? Visit your favorite electronics store this month and take a Techtalk home for a 30-day trial. If you don't agree that it's superior to all other cordless phones, return it for a full refund.

56. This passage is _________.

A. a newspaper article  B. an advertisement  C. a letter          D. a scientific introduction

57. What is Techtalk?

A. A kind of cordless phones.         

B. A company that used cordless phones.

C. A new technology that reduces static.

D. A mobile phone with the patented Cellular 6 technology.

58. This month, you can ________.

A. get a reduced price on a Techtalk   

B. try a Techtalk at home

C. get any cordless phone which you like 

D. exchange a Techtalk phone for an ordinary phone.

患儿男性，7岁，因“甲状腺肿大，心悸”来诊。近1个月无明显诱因患儿出现心悸不宁，心烦少寐，易出汗，手指颤动，眼干，目眩，倦怠乏力，舌质红，舌体颤动，脉弦细数。查体：甲状腺Ⅱ度肿大。心电图：窦性心动过速；甲状腺功能：T₃、FT₄、TT₃、TT₄增高，TSH降低。

患儿的诊断是（）

A.病毒性心肌炎

B.心律失常

C.甲状腺功能亢进症

D.甲状腺功能减退症

E.甲状腺腺瘤

F.自主神经功能紊乱

G.儿童性癔病

火车撞击时，人在座位中，背向火车前进方向的乘客如果太晚接触地面，可以双手（）。

A.抱颈

B.抱头

C.护腹部

D.护心

学习档案袋