问题 单项选择题 案例分析题

患儿8个月,呕吐、腹泻2天入院,发病初伴发热,咳嗽,呕吐2~3次/天,腹泻7~8次/天,水样便,大便镜检少量脂肪球,尿量不少,口渴,略见消瘦,入院时体温37℃双眼窝及前囟稍下凹,皮肤弹性尚好,四肢温暖。

下列哪个治疗方案最佳()

A.大量静脉用抗生素

B.口服大量抗生素

C.口服补液盐及治疗上感

D.静脉滴注葡萄糖

E.只需给助消化药

答案

参考答案:C

阅读理解

Tuesday, 1st September

I had mixed feelings today, nervous, worried, happy, excited… My heart went down when Miss Chan, our head teacher, said that Matthew and Beth, two students from England, would spend three months with us! I was worried that I had to speak English so much! But at the end of the school day, I was happier than I thought: the morning with them today was more enjoyable than I expected.

Today is the most unforgettable first day I have had! Matthew is fantastic! His English is clearer and easier to listen to than I thought. The other English student, Beth, is the most helpful girl I’ve ever met. There were lots of things to do on the first day. Beth offered to help Miss Chan put up all the notices. Of course, some of the credit (功劳) should also go to ME because I translated some of the notices for her. Miss Chan praised us!

We finished all the preparations 10 minutes earlier than expected, then Beth and I talked for a while, Matthew sang several English songs and did some stand-up comedy (单人喜剧表演) at the party. We all praised him. When the bell rang to end the first school day, none of us wanted to leave.

When I went back home, I had a little headache. I have probably spoken more English today than the whole of last year.

It was really a happy day! I hope our friendship can continue, even after they gone back to England!

小题1:The writer felt ______ when he heard the news from Miss Chan.

A.tired

B.angry

C.fantastic

D.worried小题2: Beth helped Miss Chan with the ______.

A.comedy

B.speeches

C.notices

D.translation小题3: Matthew ______ at the party.

A.had a talk

B.rang the bell

C.sang several songs

D.made a preparation小题4: Matthew and Beth ______ on the first day.

A.spoke much Chinese

B.got lots of praise

C.had a little headache

D.forgot to leave the school小题5: From the passage, we know that the writer ______.

A.caught a bad cold that day

B.went back home with Beth

C.expects to travel to England

D.likes the two English students

填空题

(16分)现有某金属硝酸盐的化学式为M(NO3)2,为了探究其热分解产物,某化学小组开展探究性学习:

【查阅资料】金属活泼性不同,其硝酸盐分解产物不同。如,2KNO32KNO2+O2↑,

2Cu (NO3)22CuO+4NO2↑+O2↑,  4AgNO34Ag+4NO2↑+2O2

【提出猜想】猜想1  M(NO3)2 M(NO2)2+O2↑  

猜想2  2 M(NO3)22MO+4NO2­↑+O2

猜想3                                                           

【设计实验】为了探究上述猜想,设计如下实验装置:

【实验步骤】①连接仪器;②检查装置气密性;③取一定量样品装入大试管中,并重新连接好仪器;④加热;⑤……

⑴写出猜想3的化学方程式:                                               

⑵测定气体体积应选择       (填A或B);不选另一个装置的理由是           

                                                        

⑶实验收集到一定量气体是      ,量筒读数前应注意                        

为了检验收集气体的成分,其操作方法是                                    

                                                                      

⑷在实验后量筒里的水中加入适量碳酸氢钠粉末,溶液中产生大量气体,说明     正确(填“猜想1”、“猜想2”或“猜想3”);

⑸该小组测得两组数据:①实验前样品质量为Wg,收集到气体体积为V L;②实验前

样品质量为Wg,完全分解后测得固体产物质量为m g;

请你选择其中一组数据,计算元素M的相对原子质量为