问题 单项选择题

肥达反应假阴性的原因,以下哪一项是错误的

A.早期应用抗生素
B.重度营养不良
C.伤寒杆菌的变异
D.免疫缺陷者
E.合并重症肺炎

答案

参考答案:C

解析: 伤寒患者如果早期使用有效抗菌素,因细菌较快被消灭,检查抗体滴度可能不高;此外对于机体免疫功能低下或缺陷的患者,由于缺乏抗体应答或应答较弱,则也会出现假阴性结果,答案B和D均属于此种情况。

阅读理解

Cholesterol                          Dr, Arlene Donar, Medical

Watchers                                     Director SPECIAL PURCHASE

ALERT-JULY 2008

“BEST PRODUCT WE VE EVER SEEN”—THIS REALLY-WORKS—ON SALE NOW

Need to ler your cho1esterol(胆固醇)?  We strongly recommend

CholesterolblockTM, This really works, and how is the best time to buy, because of a special offer for the first 250 customers only for a limited time.   

*Takes cholesterol out of food, no matter what you eat.

*Clinically demonstrated effective in university and hospital testing,.

*Lowers cholesterol absorption up to 42% or more.

*NO SIEDE EFFCTS unlike LiptorR, ZocorR, CrestorR& other commonly prescribed(处方的)medications safe and effective.

*Outsells all other brands on Internet every month.    

LIMITED TIME ONLY---Try Cholesterol Watchers free with purchase. 

小题1:If you happen to be the 200th customer to buy Cholesterolblock, you will      

A.be able to buy it at a low price

B.be the luckiest one online

C.try it free of charge

D.change your diet小题2:LiptorR, ZocorR,CrestorRare       .

A.diseases

B.side effects

C.medicines

D.cholesterol小题3:CholesterolblackTM has the following advantages EXCEPT that       

A.it helps take cholesterol out of whatever food you eat

B.it has been proved useful in hospital testing

C.it helps people absorb at least 42% cholesterol

D.it sells best on Internet every month小题4:Where can you most probably read this passage?

A.In a travel guide book.

B.On a university bulletin board.

C.In a health magazine.

D.In a doctor's prescription.

单项选择题