OnSeptember19thisyear,youwills-优题课

Humans have five senses：sight，hearing，smell，taste and touch．They collect information for the brain．For example，the eyes collect information on pictures and the ears collect information on sounds．

Sometimes a person loses a sense．Their other senses become better．For example，a blind person has much better senses of hearing and touch．

Sight

The eyes can only see with light．Light carries the picture of something into the eyes so humans can see it．But do you know that the picture is upside down？The brain has to turn the picture the right way up again．

Hearing

Sounds travel through the air like waves （波）．Human ears are like cups．They catch sound waves for the brain and the brain translates them as different sounds．

Smell

Humans smell with their noses．Most people can recognize about 10，000 kinds of smell．This is amazing!Humans each have five million receptor cells （感受细胞）in their noses．Noses are not only for smelling．They also clean and warm the ail that people breathe in．How does the nose prevent the dirty air from getting into the body？Well，it sneezes（打喷嚏）！

Touch

There are receptor cells for the sense of touch all over the body．This is different from the other senses．Touch receptor cells are in the lowest part of the skin．They help the body to have all kinds of feelings like pain，cold and heat．Some parts of the body （like the finger） are more sensitive（敏感的）than other parts of the body （like the back） because they have more touch receptor cells．

Taste

People can taste food because they have about 10，000 taste buds（味蕾）on their tongues．Old taste buds die and new ones come out every two weeks．But when people get older，this happens less often．That's why old people often complain their food is tasteless．Scientists also find that smokers have fewer taste buds．Do you want food to taste good？Well，don't smoke!

For hundreds of years，people knew the basic tastes were sour，sweet，salty and bitter（苦）．In 2002，a fifth taste，umami（delicious taste） joined the list．Now，a study from Purdue University in the US found that fat could actually be the sixth basic taste．

To be considered a basic one，a taste needs to beable to active certain receptor cells in the mouths．A study has shown that humans have fat receptors in the mouths．Not long after that，a scientist made a study to test a second question：can people taste the difference between fat and other tastes？

Richard Mattes gave the testers six different kinds of things．Each kind had a taste：sweet，salty，sour，bitter，umami or the newcomer﹣fat．Mattes asked the people to pick out tastes by their differences．This was to test whether or not fat would be picked out from the group．Most of tlie testers could clearly find out the different taste of fat．

Then how does fat taste？"It's terrible．"Mattes said．"However，the taste can be pleasant in a small amount，just as we enjoy the bitterness of chocolate．"

senses

（111）

facts about the senses

sight	eyes	Pictures of real things are completely different in（112）　　from those carried by light into the eyes．
hearing	ears	Sound waves caught by ears must go through a process like（113）　　so that we can hear different sounds．
smell	nose	The fhnctions of nose are smelling，cleaning and warming the air people breathe in．Sneezing is the way to（114）　　the dirty air we breathe in．
touch	（115）　 skin	People feel pain，cold and heat（116）　　the fnction of the receptors．So the more touch receptors we have，the more sensitive we are．
taste	tongue	Old taste buds die and new ones come out every 2 weeks． Losing a certain amount of taste buds（117）　　that the old and the smokers have a bad sense of taste．They can't enjoy tasty food like others．
		（118）	sour sweet salty bitter umami
		one newly found taste	A scientific study has proved people have fat receptors in the mouth．One（119）　　 study shows：people can clearly（120）　　 the taste of fat from other tastes．

Smashed cucumber （拍黄瓜）salad is one of the most popular cold dishes in China．You can find the green dish anywhere from restaurants to homes．（1）　　

According to The New York Times，smashed cucumber salad is"everywhere"in New York．Some restaurants have even added the dish to their menus．（2）　　But American cooks are trying yogurt，honey，lemon and other common western ingredients．

Why is this dish becoming so popular？（3）　　Smashed cucumbers can hold onto tastes more than cucumbers which are cut into fixed shape and size．"Just changing the way you break down an ingredient…changes the way it feels and tastes．It's cool．"said Danny Bowien，a cook at a New York restaurant．

（4）　　The cook smashes fresh cucumbers with the flat side of a knife．（5）　　Then other ingredients can be added．Also，it takes only five minutes to make the salad．Cook Julia Goldberg said it's really"satisfying"．

The success of smashed cucumber salad abroad shows that we should try to fit into local conditions when spreading Chinese culture across the world，said The Beijing News．

A．This smmner，even Americans are trying it．

B．Most people like the special taste it produces．

C．The way the dish is prepared also draws people's attention．

D．The strong smash makes the cucumbers different shapes and sizes．

E．Americans have expressed their opinions on the taste of this salad．

F．In China，people use garlic（蒜），vinegar（醋）and oil to make the cucumber tastier．

Dear Merry，

Recently，I have trouble with my study．

In school I can't listen to teachers carefully because I always feel tired and sleepy．I don't spend time with friends after class either because I think it's a waste of time．I even miss writing some answers in the test．

At home，I can't get my homework done every night．My parents don't let me stay up．So

I have to get up early the next morning to finish it．Lately，I even get a bad headache．

How can I solve these problems？

Yours，

LiuYa

Dear Liu Ya，

When you have trouble listening to teachers carefully in class， you can ask your teachers or deskmate to remind you often．Then spending time talking about many different things with friends can make you happy．It's not a waste of time．As for homework，when it's hard to get finished，one thing you can try is setting goals for yourself．Ask your parents to help you．You must take a break，especially if you don't feel well．You might be surprised but a short break can help you get more done!Lastly，if you don't worry and have enough sleep，your headache will leave you．

Yours，

Merry

81．Liu Ya wrote the letter to Merry in order to 　　．

A．	ask for help
B．	express worries
C．	share her experience

82．Liu Ya doesn't want to stay with friends after class because 　　．

A．	she needs to sleep
B．	she thinks it's a waste of time
C．	she has trouble with her classmates

83．Merry thinks 　　．

A．	taking a break is necessary
B．	being with parents is helpful
C．	setting goals by parents is important

84．According to the underlined part，what might Liu Ya's teacher say？

A．	Sleep for a minute．
B．	Listen carefully．
C．	Stop talking．

85．From Liu Ya's letter，we can find that she is too 　　．

A．	passive
B．	proud
C．	stressed．

Shopping Guide in New World Shopping Mall
6F	Restaurant Coffee shop/Tea house
5F	Children's pleasure ground Cinema
4F	Electrical equipment Writing materials Office supplies
3F	Men's clothing Bedding
2F	Women's clothing Children's clothing
IF	Fruits，vegetables，meat，eggs，drinks，cooked food，etc． Kitchen ware
Business hours Weekdays：8：00 am﹣6：00 pm Weekends：9：00 am﹣9：00 pm

76．From the shopping guide，we can see there are 　　floors in New World Shopping Mall．

A．	five
B．	six
C．	seven

77．On the second floorMrs．Zhang can buy clothing for her 　　．

A．	children
B．	husband
C．	father

78．You can buy 　　and writing materials on the fourth floor．

A．	desks
B．	bowls
C．	quilts

79．You can invite your fiiends to 　　or drink tea on the top floor．

A．	play games
B．	watch films．
C．	have lunch

80．According to the guide，Mr．Li can go shopping 　　on weekdays．

A．	at 7：30 am
B．	at 8：30 am
C．	at 6：30 pm．

Teeth are very important for our health．They will be our lifelong fiends．So we should learn to protect them at a very young age．Here are some tips：

First，we should eat right．

*Don't eat too much candy or drink too much cola，or our teeth will go bad easily．

*Have more cheese，milk and yogurt to make teeth strong．

*Eat more vegetables and fruits to help clean teeth．

Second，we should keep these numbers in mind．

*2/Day Brush your teeth at least twice a day：in the morning and before bedtime．

*2﹣3 Minutes Brush for at least two to three minutes every time．

*3 Months Get a new toothbrush every three months．

*6 Months Go to the dentist every six months for a check﹣up．

71．We're too young，so we needn't start protecting our teeth．　　

72．Cheese，milk and yogurt can keep our teeth strong．　　

73．We shouldn't brush our teetlh after lunch．　　

74．We can brush our teeth for only one minute each time．　　

75．At least four toothbrushes should be used in a year．　　．

Name of the festival	The ________ Festival
Date of the festival	The 15th day of ________ month
What to eat	Sweet or salty ________
What children like doing	Guessing_______ to the lantern riddles
What farmers harvest	Fruits and _______