应收账款质押登记公示系统的用户管理员的登录名不可以是（）。 A.字母 B.数字 C.

下列构件截面中，（）构件耐火性最好（见题58图）。

A.A

B.B

C.C

D.D

请回答下列与人体血液相关的问题：

（1）人的ABO血型是可遗传的，A型血和B型血的人具有不同的血型性状特征，因为他（她）们细胞内染色体上控制血型遗传的______不同．

（2）医生给患者注射血清时必须考虑多方面的因素，其中包括ABO血型配合问题．由于______型血的血清中没有______，因此，不论患者是何种ABO血型，注射这种血清均不会使患者的红细胞发生凝集．

（3）人体血液中的某些白细胞能通过变形运动穿过毛细血管壁进入组织中，在组织中吞噬侵入机体的各类病原体．这种免疫功能属于______．

（4）某同学说“在人体动脉血管中流动的血是动脉血，在静脉血管中流动的血是静脉血”，老师指出这种说法是错误的．请你说明理由______．

（5）医生给小徐同学测量血压，测得的数据为14.2/9.1千帕，这个数据表示的意思是______．

人们一年四季都受流感病毒攻击，不过，冬天的流感病例特别多，原因是冬天天气寒冷，风势强劲，人们易受寒，抵抗力减弱，病毒便乘虚而入，侵袭人们的呼吸系统。此外流感病毒会通过空气传播。

冬天，人们多半在室内活动，又因怕冷经常把窗户关闭，令空气不流通，病毒容易传播。另外，若温度低，呼吸道特别是鼻腔的黏膜分泌液不足，黏膜失去水分，表面干燥破裂，犹如平添了许多伤口，大大增加了被病毒感染的危险。目前世界公认的预防流感的有效方法是接种流感疫苗。（8分）

（1）流感传染性最强的时期是在         

（2）接种的流感疫苗属于         ，接种流感疫苗的目的是         

（3）阅读上文可知流感传播的途径是            属于         传染病。

（4）从预防流感传染的措施上看，咳嗽或打喷嚏时用手帕捂住口鼻是为了         ，平常注意室内通风是为了         ，发现流感病人马上隔离是为了         。

阅读理解。

     I don't think there is anything wrong with your blood. The key to your problem is that long nap (打盹,

小睡) after dinner.

     If you didn't sleep for hours during the early part of the evening, you would be more ready to sleep at

bedtime. If you didn't nap after dinner, you would not want to stay up so late, and you would not feel the

need to take a sleeping pill. The pill is still working in your system when you get up in the morning. This

helps account for the fact that you feel tired all day.

     You should get out of the habit of sleeping during the evening. Right after your evening meal, engage in

some sort of physical activity-a sport such as bowling, perhaps. Or get together with friends for an evening

of cards and conversation. Then go to bed at your usual time or a little earlier, and you should be able to get

a good night's rest without taking a pill.

     If you can get into the habit of spending your evenings this way, I am sure you will feel less tired during

the day. At first it may be hard for you to go to sleep without taking a pill. If so, get up and watch television

or do some jobs around your house until you feel sleepy. If you fall asleep and then wake up a few hours later,

get up but do not take a sleeping pill. Read a while or listen to the radio, and make yourself a few hours' sleep

that night, you will feel better in the morning than you usually feel after taking a pill. The next night you will

be ready to sleep at an earlier hour. The most important thing is to avoid taking that nap right after dinner and

avoid taking pills.

1. According to the writer, it is difficult for you to go to sleep because _____.[ ]

A. you get the habit of staying up late

B. you haven't taken sleeping pills

C. you sleep for hours after dinner

D. you fail to do some exercises

2. Which of the following is NOT true if you want to get out of the habit of sleeping during the evening? [ ]

A. Go to bed earlier than usual.

B. Talk with friends after dinner.

C. Stay with friends after dinner. 　

D. Do some physical labor.

3. You feel tired all day probably because _____. [ ]

A. you stay up too late

B. you get up too early in the morning

C. you take sleeping pills

D. you wake up too frequently at night

4. We may infer that the author is most probably a _____.[ ]

A. doctor 　　

B. reporter 　　

C. scientist

D. professor

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