摘要： c e h e t a r
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单词拼写。
1. A friend of m told me a story about an old scientist,
2. I can't i what has happened.
3.It is their c to give thanks to God for the harvest.
4. You should always be t to your parents for giving you a good education.
5. The children could h answer those questions which the foreigner asked.
6. She w what they had to be thankful for.
7. The children looked f to going on a picnic for a long time.
8. Every student must h in their homework after they get to school.
9. We want to r our children to be decent (正派的) men and women.
10. My sister is w in swimming,so she has to practice it.
11. Mr Smith was fairly b himself with joy.
12. We said things would turn out well,and sure e they did.
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2. I can't i what has happened.
3.It is their c to give thanks to God for the harvest.
4. You should always be t to your parents for giving you a good education.
5. The children could h answer those questions which the foreigner asked.
6. She w what they had to be thankful for.
7. The children looked f to going on a picnic for a long time.
8. Every student must h in their homework after they get to school.
9. We want to r our children to be decent (正派的) men and women.
10. My sister is w in swimming,so she has to practice it.
11. Mr Smith was fairly b himself with joy.
12. We said things would turn out well,and sure e they did.
（ ）1．Good afternoon． A．Yes，R-U-L-E-R．
（ ）2．How are you? B．Yes，he is
（ ）3．What’s this in English? C．No，it isn’t．
（ ）4．Can you spell ruler? D．Red．
（ ）5．What color are the apples? E．I’m OK．
（ ）6．What is her name? F．Good afternoon．
（ ）7．Is this your pencil? G．In your backpack．
（ ）8．Is he your brother? H．No．I don’t．
（ ）9．Where are my books? I．Jenny．
（ ）10．Do you have a soccer? J．It’s an alarm clock．
查看习题详情和答案>>| 阅读理解。 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| David's got a text message from his friend Sam. Can you understand it? 7,15 20,15 20,8,5 16,1,18,11 This message was in code (密码, 代码). How many letters are there in the English alphabet? Twenty-six. So can you read it now?
B instead of C, and so on. His message to Sam shown on the right was very short. Can you understand?
she felt puzzled. She couldn't read it at all. But David was very happy that his sister couldn't read his message! Lots of people use codes to send secret messages. In a war, secrets are very important so soldiers often send each other messages in code. Nowadays, we can use computers to make and break difficult codes. Even before computers, people invented other machines to do this. Here's a famous machine that Germans used in the Second World War (1941-1945). It's called the Enigma Machine. The machines were very big, heavy and expensive. Every day they changed the codes automatically, and this made it almost impossible for anyone to break the codes. The person sending a message had one machine, and the person receiving the message had another. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 1．Sam asked David to go to the ______. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| A．park B．house C．museum D．zoo | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 2．Sam told David to meet him ______. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| A．before breakfast B．after school C．after dinner D．before school | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 3．Codes are used to keep something ______. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| A．new B．old C．secret D．known | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 4．People will never know the meaning if they can't ______ the code. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| A．break B．make C．change D．write | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 5．The best title of this passage is . | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| A．English Letters B．Codes C．Messages D．Machines |