问题 单项选择题 A1型题

下列关于肾上腺危象发病机制中错误的是()

A.在慢性肾上腺功能不全的基础上,严重应激诱发严重的肾上腺皮质分泌不足

B.ACTH分泌增多引起黑色素刺激激素分泌增多,导致皮肤黏膜高色素沉着

C.重症患者的发生率较高,且多数为不可逆性损伤

D.感染性休克患者合并肾上腺皮质功能减退可使病死率明显增加

E.脓毒症患者体内大量炎症介质和细胞因子的释放可导致ACTH、CRH和皮质醇合成降低及释放减少

答案

参考答案:C

解析:肾上腺危象在危重症的发生率比较高,其中感染性休克患者的发生率可达25%~40%,不过其损伤多为可逆性,随病情好转而恢复,故C错误,其余均正确。

阅读理解

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。

     Many people think of guys as being carefree when it comes to their appearance. But in fact, a lot of guys

spend plenty of time in front of the mirror. They care just as much as girls do about their body image.

     Body image is a person's opinions and feelings about his or her own body and physical appearance. 1.____

You appreciate your body for its capabilities (能力) and accept its imperfections. 

     2____. Here are some ideas: Recognize your strengths. Different. body types are good for different things.

What does your body do well? Maybe your speed, strength,or coordination (协调性) makes you better than

others at a certain sport. That may be basketball, table tennis, mountain biking, dancing, or even running. Or

perhaps you have non-sports skills, like drawing, painting, singing, playing a musical instrument, writing, or

acting. 3.____

     Exercise regularly. Exercise can help you look good and feel good about yourself. Good physiques (体形)

don't just hdppen. 4.____. A healthy habit can be as simple as exercising 20 minutes to 1 hour three days a

week. Working out can also lift your spirits.

     Respect your body! Practicing good habits; regular showering; taking care of your teeth, hair, and skin;

wearing clean clothes, and so on-can help you build a positive body image. 

     5.____ Your body is just one part of who you are. Your talent for comedy, a quick wit (智慧), and all the

other things make you unique. So try not to let small imperfections take over.

A. Use this as an opportunity to discover what you're good at

B. Be yourself.

C. Having a positive body image means feeling satisfied with the way you look.

D. Just explore talents that you feel good about.

E. They take hard work, regular workouts, and a healthy diet.

F. The good news is that self-image and body image can be changed.

G. So, what can you do to develop a positive body image?

问答题 论述题