教师自觉利用环境和自身的教育因素对学生进行熏陶和感染的德育方法是( )。A．情感陶

张伟，男，37岁，因车祸内脏破裂大出血而欲行急诊手术治疗。去手术室之前，护士遵医嘱迅速为患者建立了一个静脉通道并行输血治疗。因时间紧迫，为了尽早将血输给患者，护士从血库取回血后，便将血袋放在热水中提温，5分钟后便给患者输入。输入10分钟后，患者感到头部胀痛，并出现恶心呕吐，腰背部剧痛。

接下来，当大量血红蛋白进入血浆后，此患者将出现的特征性表现是

A．心前区压迫感
B．面部潮红
C．四肢麻木
D．黄疸和血红蛋白尿
E．血压下降

阅读理解

       It was Mary's birthday. She received a letter from her uncle. "Dear Mary," he wrote in the letter,

"Happy birthday. I'm sending you some chickens. They will arrive tomorrow. I hope you'll like them.

Uncle Toby."

       Mary was very pleased. She liked eating eggs and chicken. "I can keep the chickens for their eggs

or eat them." She thought.

       When the chicken arrived the next day, they were put in a box. Mary was very happy. She took the

box of the truck and began to carry it into her garden, but the box of chickens was so heavy that she

dropped it.

       The box fell on the ground and broke. The chickens all ran out. They ran here and there. Mary spent

hours in trying to find them.

       A few days later her uncle came. He asked, "Did the chickens arrive safely?" "Yes .but I dropped the box. It broke open and the chickens ran everywhere. It took me the whole morning to look for them.

" Mary said.

       "Did you find them all?" asked her uncle. "I hope so," Mary answered, "but I only caught eleven of

them." "That's very interesting. I only sent you six." Her uncle said with a smile.

1. Mary received a letter from her __________.

A. aunt                  

B. uncle                

C. grandfather              

D. friend

2. When she received her present, Mary was _________.

A. happy          

B. sad            

C. worried            

D. unhappy

3. Why did Mary drop the box? Because _________.

A. she didn't like the present            

B. the box was too heavy

C. she wanted to break the box        

D. she couldn't wait to look at her present

4. It took her ________ to find the chickens.

A. an hour        

B. two hours    

C. three hours          

D. the whole morning

5. Did Mary know how many chickens her uncle sent her?

A. Yes, she did    

B. Yes, she didn't  

C. No, she did.          

D. No. she didn't

化学试剂在生物实验中发挥着十分重要的作用，回答下列关于化学试剂的问题：

(1)填表说明有关化学试剂的主要组成成分：

(2)化学试剂在生物实验中运用广泛，例如：苏丹Ⅳ号染液可用来鉴定脂肪，是因为苏丹Ⅳ可将脂肪染成__________色。

(3)将小麦种子分别置于20℃和30℃培养箱中培养4天，依次取等量的萌发种子分别制成提取液Ⅰ和提取液Ⅱ。取3支试管甲、乙、丙，分别加入等量的淀粉液，然后按下图加入等量的提取液和蒸馏水，45℃水浴保温5分钟，立即在3支试管中加入等量斐林试剂并煮沸2分钟，摇匀观察试管中的颜色。结果能呈砖红色的试管是________，其中颜色较浅的是________。

给你一架天平，一杯盐水，一只刻度不清的量筒，另给适量的水，则测量盐水密度的实验步骤为：

（1）称出盐水的质量：①称出________的质量，记为m₁；②称出_______的质量，记为m₂；③量筒中盐水的质量m=___________。

（2）测量盐水的体积：①在倒入量筒内的质量为m的盐水液面处做一个记号，记为V_盐，然后将盐水倒回盐水杯中；②将适量的水倒入量筒，使_________的体积与质量为m的盐水的体积_________；③称出倒入量筒内水的质量m₃；④水的体积V_水＝_________。

（3）则盐水的密度ρ_盐水=_________。

应每隔3个月抽测部分救生圈的浮力，进行投水试验以检查其强度。（）