题目内容
| 单项选择。 |
| 1. How often do you go __________? A. run B. advertise C. running 2. My father does all the __________ at home. A. cook B. cooking C. diet 3. His poor eyesight was a __________ to him. A. disadvantage B. advertise C. description 4. We should __________ for someone to look after the garden. A. advertise B. apply C. care 5. Remember a well balanced __________ is good for our health. A. hobby B. diet C. food |
试题答案
C,B,A,A,B
相关题目
单项选择。
1.---- Good morning!
----______________
----______________
A Bye
B Good morning
C Good luck
B Good morning
C Good luck
2.----Hello, Ann! How are you?
---- ________________
---- ________________
A How are you?
B Nice to meet you
C Fine, thanks.
B Nice to meet you
C Fine, thanks.
3.---- Hi, Jenny! Nice to meet you!
---- _______________________
---- _______________________
A Yes
B Nice to meet you, too
C Good morning
B Nice to meet you, too
C Good morning
4.----________, What's your name?
---- Mary Jones
---- Mary Jones
A Hi
B Oh
C OK
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B Oh
C OK
单项选择。
1. We don't like him. He is a yes-man. 句中画线部分的意思是 。
[ ]
A. 坚强的人
B. 总是有理的人
C. 唯唯诺诺的人
D. 说一不二的人
B. 总是有理的人
C. 唯唯诺诺的人
D. 说一不二的人
2. Do you know what will kill (杀死) the birds?
[ ]
A. Men
B. Tigers
C. Plants
D. Dogs
B. Tigers
C. Plants
D. Dogs
3. 当你问“'英语'用英语怎么说？”时，下面哪一个选项不正确？
[ ]
A. What's "英语" in English?
B. What's the English for "英语"?
C. Can you speak English?
D. How can you speak "英语" in English?
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B. What's the English for "英语"?
C. Can you speak English?
D. How can you speak "英语" in English?
实验室用铜制取硫酸铜，将适量硝酸分多次加入到铜粉与稀硫酸的混合物中，加热使之反应完全，通过蒸发、结晶得到硫酸铜晶体。
（1）为了节约原料，硫酸和硝酸的物质的量之比最佳为： ；为了吸收该反应中产生的尾气，请选择下列中合适的装置 。
（2）为符合绿色化学的要求，某研究性学习小组进行如下设计：
第一组：以空气为氧化剂法
方案1：以空气为氧化剂。将铜粉在仪器B中反复灼烧，使铜与空气充分反应生成氧化铜，再将氧化铜与稀硫酸反应。
方案2：将空气或氧气直接通入到铜粉与稀硫酸的混合物中，发现在常温下几乎不反应。向反应液中加少量FeSO4，即发生反应，生成硫酸铜。反应完全后，加物质甲调节pH ，铁元素全部沉淀（一般认为铁离子的浓度下降到10-5mol·L-1，就认为沉淀完全），然后过滤、浓缩、结晶。
已知：Ksp[Cu((OH)2]≈10-22， Ksp[Fe((OH)2]≈10-16, Ksp[Fe((OH)3]≈10-38
请回答下列问题：
如开始加入的铜粉为3.2 g，最后所得溶液为500 mL,溶液中含有铁元素0.005 mol。
①方案1中的B仪器名称是 。
②为了使铁元素全部沉淀，应调节pH至少为_________。
③方案2中甲物质可选用的是 。
④反应中加入少量FeSO4可加速铜的氧化，用离子方程式解释其原因 。
第二组：过氧化氢为氧化剂法
将3.2g铜丝放到45 mL 1.5mol·L-1的稀硫酸中，控温在50℃。加入18mL 10%的H2O2，反应0.5h，升温到60℃，持续反应1 h后，过滤、蒸发浓缩、减压抽滤等，用少量95%的酒精淋洗后晾干，得CuSO4·5H2O 10.5g。
请回答下列问题：
⑤反应时温度控制在50℃~60℃不宜过高的原因是 ，
⑥本实验CuSO4·5H2O的产率为 。 查看习题详情和答案>>
（1）为了节约原料，硫酸和硝酸的物质的量之比最佳为： ；为了吸收该反应中产生的尾气，请选择下列中合适的装置 。
（2）为符合绿色化学的要求，某研究性学习小组进行如下设计：
第一组：以空气为氧化剂法
方案1：以空气为氧化剂。将铜粉在仪器B中反复灼烧，使铜与空气充分反应生成氧化铜，再将氧化铜与稀硫酸反应。
方案2：将空气或氧气直接通入到铜粉与稀硫酸的混合物中，发现在常温下几乎不反应。向反应液中加少量FeSO4，即发生反应，生成硫酸铜。反应完全后，加物质甲调节pH ，铁元素全部沉淀（一般认为铁离子的浓度下降到10-5mol·L-1，就认为沉淀完全），然后过滤、浓缩、结晶。
已知：Ksp[Cu((OH)2]≈10-22， Ksp[Fe((OH)2]≈10-16, Ksp[Fe((OH)3]≈10-38
请回答下列问题：
如开始加入的铜粉为3.2 g，最后所得溶液为500 mL,溶液中含有铁元素0.005 mol。
①方案1中的B仪器名称是 。
②为了使铁元素全部沉淀，应调节pH至少为_________。
③方案2中甲物质可选用的是 。
| A．CaO | B．NaOH | C．CuCO3 | D．Cu2(OH)2CO3 E、Fe2(SO4)3 |
第二组：过氧化氢为氧化剂法
将3.2g铜丝放到45 mL 1.5mol·L-1的稀硫酸中，控温在50℃。加入18mL 10%的H2O2，反应0.5h，升温到60℃，持续反应1 h后，过滤、蒸发浓缩、减压抽滤等，用少量95%的酒精淋洗后晾干，得CuSO4·5H2O 10.5g。
请回答下列问题：
⑤反应时温度控制在50℃~60℃不宜过高的原因是 ，
⑥本实验CuSO4·5H2O的产率为 。 查看习题详情和答案>>
根据短文内容，完成下面的任务。
What would you do if you had $76 billion? Bill Gates was happy to give a third of it away to charity. He
spends at least $1.2 billion every year helping the poor.
Bill is the richest, and also the most generous man in the world. He was born on October 28, 1955. (A)
When he was 20, he left university. Two years later he started Microsoft. For 11 years, Bill has been the
world's richest man.
This year, he again came top with $76 billion. But he is giving away $28 billion to help others. "I'll give
my money back to the world," said the rich man. "Many people still need medicine and care to become
healthier."
Bill loves helping others just as he loves computers. He always says "super" when he talks about making
people's health better. "(B)The world's health is a lot like solving computer problems. You get smart people
together. You take it on because there has never been an answer before," he said. If you ask him why he
likes giving away his money, he would turn his head and say,"It's because of my mum. She asked me to
do (C)it years ago when I was just a small boss."
spends at least $1.2 billion every year helping the poor.
Bill is the richest, and also the most generous man in the world. He was born on October 28, 1955. (A)
When he was 20, he left university. Two years later he started Microsoft. For 11 years, Bill has been the
world's richest man.
This year, he again came top with $76 billion. But he is giving away $28 billion to help others. "I'll give
my money back to the world," said the rich man. "Many people still need medicine and care to become
healthier."
Bill loves helping others just as he loves computers. He always says "super" when he talks about making
people's health better. "(B)The world's health is a lot like solving computer problems. You get smart people
together. You take it on because there has never been an answer before," he said. If you ask him why he
likes giving away his money, he would turn his head and say,"It's because of my mum. She asked me to
do (C)it years ago when I was just a small boss."
1. 将(A)处的句子改为同义句(每空一词)：______ ______ ______ ______ 20, he left university.
2. 将(B)处的句子译成汉语：_________________________________________
3. (C)处的it指的是(用英文回答，不超过5个词)
4. 回答问题：
When did Bill Gates start Microsoft?
5. 单项选择。
The writer of the passage wants to ______.
A. introduce Microsoft company to us
B. let us know something about charity
C. tell us who is the richest person in the world
D. praise Bill for his help to the poor people
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2. 将(B)处的句子译成汉语：_________________________________________
3. (C)处的it指的是(用英文回答，不超过5个词)
4. 回答问题：
When did Bill Gates start Microsoft?
5. 单项选择。
The writer of the passage wants to ______.
A. introduce Microsoft company to us
B. let us know something about charity
C. tell us who is the richest person in the world
D. praise Bill for his help to the poor people
任务型阅读。
A: Hello, Jack! Where are you now?
B: I'm in Sydney. I'm at my aunt, Mrs. Miller's home.
A: Really? What's the weather like there?
B：It's sunny and warm
A: Good. What are you doing?
B：(A)我正在帮我姑姑打扫房间。
A: Is your sister with you in Sydney?
B: Yes. My family are all in Sydney.
A: That sounds nice. What are they doing now?
B: My father is playing chess with my uncle in the living room. My mother is cooking. (B) My sister is play-ing soccer with my aunt's son in the garden What's the weather like in Guangzhou and what are you doing?A: Oh, It's raining here. I am watching TV. But it's boring.
B: Maybe you can find an interesting book and read it.
A: Good idea. Then bye-bye.
B：Bye.
任务一：翻译句子
1.将划线部分(A)处翻译成英语
.
2.将划线部分(B)处翻译成汉话
.
任务二：单项选择
( ) 3. What does the underline (划线) word "here" refer to(指的是) ．
A. the garden
B. Sydney
C. Guangzhou
D. the living room
B. Sydney
C. Guangzhou
D. the living room
4. What's the weather like in Sydney?
.
5 Who is cooking?
. .
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