环境管理会计信息

集合A＝｛1，2｝的真子集的个数是（    ）．

A．1

B．2

C．3

D．4

将一片刚摘下的菠菜叶片浸在盛有70℃热水的烧杯中，发现叶片背面产生的气泡数比正面多．该现象说明菠菜叶片的（　　）

A．背面气孔数较多

B．背面颜色较深

C．正面气孔数较多

D．正面颜色较深

One warm May day, two eighteen – year – old students from San Francisco State College decided to cool off with a swim at Bakers’ Beach． The two students were named Robert Kogler and Shirley O’Neill． They headed out to sea for a distance of 50 metres． Robert was in front．

“Suddenly, I heard him scream,” Shirley recalls． “I looked round and saw this great grey thing going up in the air． The water seemed to be alive．”Robert screamed again． “It’s a shark! Get out of here!”

An eye – witness, Army Sergeant Leo P． Day was on guard at the nearby army post． He saw exactly what happened next． “I could see this boy struggling with the shark in the water,” he said． “The sea was red with blood． He was shouting and signalling someone to go back, go back． Then I saw the girl． She was swimming towards him． She completely ignored his warning．”Shirley reached Robert, and tried to take his hand．“When I pulled, all I could see was his arm, handing by a thread,” she said．

So she put her arm about Robert’s back, and started to swim towards the shore． She kept praying “Don't’ let it attack again!” That journey to the shore seemed to last for hours． At last, as they neared the shore, a fisherman threw them a line, and pulled them both the rest of the way．The young man had lost a lot of blood, and died two and a half hours later, From the teeth marks, experts identified the attacker as a Great White Shark．For what Sergeant Day called “the greatest exhibition of bravery I have ever seen,” the President of the US gave Shirley a medal for bravery．

小题1:When Albert was attacked by a shark Shirley        ．

A．was swimming in the sea

B．was watching him on the shore

C．was on guard at the nearby army post

D．was shouting and struggling with a shark, too小题2:Choose the right time order of the following events in the story．

a． Army Sergeant saw the girl swimming to the boy．

b． Shirley saw a great grey thing．

c． They headed out to sea．

d． Robert died．

e． A fisherman threw them a line．

f． He saw a boy struggling with a shark．

A．b,c,e,d,f,a

B．c,a,f,d,e,b

C．b,c,f,a,d,e

D．c,b,f,a,e, d小题3:We can learn from the passage that         ．

A．the two students were brave and considerate

B．the fisherman was adventurous and helpful

C．the experts didn’t do much research on sharks

D．the Sergeant cared too much about his own life

关于BOX主机天线说法正确的是（）。

A、对接收和发射信号均有放大作用

B、对接收信号有放大作用，对发射信号没有放大作用

C、对接收信号没有放大作用，对发射信号有放大作用

D、对接收和发射信号均没有放大作用

患者张某，因患有大骨节病来某医院诊治。医务人员发现此病例较典型，欲拍摄多个部位的X线片作为教学资料，于是没有征求患者的同意，又让患者补拍双膝、双肘、双手、双足、脊柱等部位的X线片。关于本案例，说法正确的是

A．医生未尊重病人知情同意的权利
B．促进医学教学和科研是病人的一项义务，医生的做法无不妥之处
C．医生为了减少纠纷而不向患者说明情况是可以理解的
D．医生可不向患者说明，但应免费拍摄增加的部位
E．对患者无大伤害而对医院有利的事情在道德上是能通过辩护的，即可以不让患者知情