2. The letter wasn,t written to him but he opened
it out of c .
科目：高中英语 来源： 题型：
[语境展示]阅读下面句子，并试着归纳balance的意思。
1. The salesgirl weighed the vegetable on the balan skilfully.
2. Riders need a good sense of balance.
3. We must keep a balance between spending and saving
4. The crown could balance a stick on the end of his nos (
5. He balanced the advantages and disadvantages of t\ -situation.
[自我归纳]balance既可作名词，也可作动词。
★作名词时，意为••⑦天平(句1)② (句2)
③均衡状态（句3)
★作动词时，意为:①使(某物) 保持平衡(句4)②平衡，平稳(句5) 。
[拓展]
keep / lose one's balance 保持/失去平衡
balanced adj,平衡的
[即学即练]翻译亍?句子。
他失去平衡，从自行车掉了下来。
2. 尽量保持工作和娱乐平衡。
3. 你能单脚站立多久?
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科目：高中英语 来源： 题型：
have to, mustn’t, needn’t, can't, ought to
1. It says No Smoking. You
smoke here.
2. 1 don’ t think it will rain. David take an umbrella.
3. Lucy was ill so her husband change their travel plan last week.
4. We don't exercise much,but we really.
5. Those results be right. You must have made a mistake.
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科目：高中英语 来源： 题型：
根据短文内容,f短文后的选项中选出能填 在空白处的最佳选项。选项中有两项为多余选项。
The tradition of birthday parties started a long time ago. People thought that there was a special danger from evz7 (邪恶的) spirits,so friends and family came together to bring good thoughts and wishes and even presents. 36 But as uiuug?iis anu WIMICS
time went by,children and then adults began to have the? own birthday celebrations. There are s?me traditions — such as sending birthday cards,blowing out the candles on a birthday cake and singing the “Happy Birthday” song,that you can find almost anywhere,any time. 37
In many English-speaking countries,a twenty-first birthday cake often has a key on top. 38 The key means that the young person is now old enough to leave and enter the family home at any time they want to!
In the past in parts of Europe,men who reached the age of thirty and were still single,had to clean the stairs of the City Hall. This way every girl could see that the man didn't have a girlfriend.39
After the age of thirty,many people prefer to forget their birthdays rather than celebrate them ... children often bring Mum (or Dad) breakfast in bed. 40 It's also a day when your friends and family have to pay if you go out for drinks or a meal!
A. Birthday traditions are.around the world.
B. At one time,only kings had birthday parties.
C. Or the cake itself is sometimes in the shape of a key.
D. It's traditional to give flowers and enjoy a special meal.
E. Family members put many sweets on the birthday cake.
F. They could also see how good he was at cleaning the house!
G. Others are more specific to certain ages and certain countries.
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科目：高中英语 来源： 题型：
I.根据下面各句句意以及单词首字母或汉语提 示词，写出该单词的正确 形式(每空一词) 。
1. The fruit was often served at wedding f
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科目：高中英语 来源： 题型：
A
★★★★☆
Nearly every driver has experienced that feeling of great tiredness,where it becomes almost impossible to stay awake at the wheel. 14-year-old Katherine Wu is too young to have experienced this situation firsthand. However slie noticed how difficult it was for her dad to remain awake while driving back from ?ieir femiiy vacations in Florida to their home in Maryland. Her mom had to talk to her dad all the way.
So I created a tool that can be used instead of my mom talking to my dad to make sure he stays awake and is safe,” she says.
Her inversion ,“Driver's Companion”，can notice driver sleepiness and warn the driver if he or she is too t?ed to be on the road.
The user wears a headset(耳机) ，which sends information about the driver' s brain waves (月凶电波) to a tiny computer. The computer can be placed in front of the driver. The 吵对撕(系统) then gives warnings,if needed. As the driver becomes sleepier,red color will be shown to warn him or her. The driver will also hear messages warning him to get off the road. The machine can say, “You’ re tired. Please take a break."
After sending her invention to the 2014 Discovery Education 3M Young Scientist Challenge,Wu was chosen as a finalist and was able to work with Dr. Jesse Miller,who is a product development specialist.
“He helped me understand how important it IS to make sure that my invention wprked for the people who were using it and that it was user-friendly,” Wu says.
As a young scientist,Wu has some advice for other students of her age: ul would like to tell them that they should choose something they* re interested in. So they 11 be willing to spend more time on it and enjoy working on it more. Also when there 's difficulty,they should just continue working hard because they’ 11 get over it."
1. Why di? Wu’s mother talk to her dad all the way?
A. To prevent an accident.
B. To help him feel relaxed
C. To discuss their vacations.
D. To make the trip enjoyable.
2. What is the purpose or‘Driver's Companion”？
A. To show drivers the way.
B. To prevent drunk driving,
C. To improve driving skills.
D. To help drivers stay awake. .
3. Which of the following shows how Driver5 s Companion works?
A. Sleepiness →Headset → warnings→ Computer
B. Sleepiness →Warnings →Headset→ Computer
C. Sleepiness →Headset → Computer → Warnings
D. Sleepiness -? Computer Headset Warnings
4. Dr. Miller lets Wu know the importance of
A. satisfying users
B. working together
C. making discoveries
D. helping other students
5. Wu advises other young students
A. to enjoy their lives
B. to learn to love science
C. not to do dangerous jobs
D. not to give up what they love
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科目：高中英语 来源： 题型：
7. A h is a woman who invites someone
to a meal or party,or to stay for a short time in her home.
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