计算:(1)72-412-1798+118;(2)5a-a21a;(3)(46-

题型:解答题

问题:

计算:
(1)
72
-4
1
2
-
1
7
98
+
1
1
8

(2)5
a
-
a
2
1
a

(3)(4
6
-4
1
2
+3
8
)÷2
2

(4)(3
2
+2
3
)2(3
2
-2
3
)2
考点:二次根式的加减乘除混合运算,二次根式的化简
题型:解答题

Many years ago, when I was working as a volunteer at a hospital, I got to know a little girl named Lisa. The poor little girl had a very serious disease and was dying. The doctor had done his best but no medicine really worked. The only chance to save her seemed to be a blood transfusion(输血) from her five-year-old brother. The little boy had the same disease before and had developed the antibodies(抗体) to fight the illness.

The doctor talked to the little boy about what they planned to do, and asked him if he would be willing to give his blood to his sister. I saw him hesitate(迟疑) for a moment. He took a deep breath and said, “Yes, I’ll do it if it can save Lisa.”

As the transfusion was going on, the little boy lay quietly in bed next to his sister. He looked at her and smiled all the time. When everything was done and the colour returned to his sister’s face, his smile disappeared and he looked a little afraid. He looked up at the doctor and asked, “ Will I start to die now?”

He was too young to understand the doctor. He thought he would have to give all his blood to his sister, but he agreed.

小题1:What happened to the 1ittle girl named Lisa at last?

A.She died of a very serious disease.

B.She got better with the antibodies from her brother.

C.She lost her little brother.

D.The transfusion failed and her illness got worse.小题2:The doctor waited the little boy to _____.

A.give a11 his blood to his sister

B.give some of his blood to his sister

C.give his life to his sister

D.get the same disease as his sister小题3:How did the five-year-o1d boy understand the doctor's plan?

A.He thought he was going to lose all his blood.

B.He thought he was going to be killed.

C.He thought he was going to die together with his sister.

D.He thought he was going to die when he grew up.小题4:What did the boy feel when the doctor talked to him about the transfusion?

A.He was unhappy to help his sister.

B.He was so afraid that he refused to do anything.

C.He was worried about his sister.

D.He was willing to give his blood.小题5:The writer still remember the story many years later _____.

A.because the little girl had a very strange disease

B.because the sister and brother had the same disease

C.because the doctor saved the little girl's life

D.because of what the boy did for his sister

题型:解答题

下列选项中,不属于人力资源规划内容的是( )。

A.人力资源需求与补充计划

B.员工调配和晋升计划

C.劳动力市场计划

D.劳动关系计划

题型:解答题

(2008)模型与原形采用相同介质,为满足粘性阻力相似,若几何比尺为10,设计模型应使流速比尺为:()

A.10

B.1

C.0.1

D.5

题型:解答题

教育改革的系统变革模式的变量包括()。

A.任务

B.结构

C.人员

D.技术

题型:解答题

访问控制列表“access-list109denyicmp10.5.10.100.0.255.255anyhost-unreach-able”的含义是()

A.规则序列号是109,禁止从10.5.10.10/16网段来的www访问

B.规则序列号是109,禁止到10.5.10.l0/16主机的Telnet访问

C.规则序列号是109,禁止到10.5.10.10/16网段的WWW访问

D.规则序列号是109,禁止从10.5.10.10/16主机来的rlogin访问

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