题目内容
Why do you think people who live in some hot countries eat very spicy(辛辣的)food? Is it because the spices make the food taste better? Is it just because their parents and grandparents and great-grandparents liked hot food,or is there some connection between spices and healthy food? Researchers from Cornell University think that it is because spice plants have some important chemicals. These chemicals can kill bacteria(细菌)which spoil food.
“Most common spices can kill 75 to 100 percent of the bacteria in food,”explains one of the scientists.The bacteria grow more easily and spoil(变质)food more quickly at higher temperatures.For this reason,it is more difficult to keep food from spoiling in hot climates,
Do you like your food spicy? Your answer probably tells something about the country you come from.If you like spicy food,it is possible that hundreds of years ago,when there were no fridges,people in your country started using spices to keep the food from spoiling.The traditional spicy dishes helped those people to live longer,healthier lives.Today,in a time of fridges,the spices just make the food taste good.
1.The chemicals in spices keep food from spoiling by_________.
A.making food taste better
B.making food hotter
C.preventing bacteria getting into food
D.killing bacteria in food
2.Food goes bad more quickly in hot climates because_______.
A.cold temperature makes bacteria
B.bacteria get used to hot food
C.high temperature helps bacteria grow faster
D.bacteria spoil food only at high temperature
3.According to the passage,spices are useful in the following things except_____.
A.helping you to live longer
B.helping to keep you healthier
C.making your food taste better
D.taking the place of fridges
I am a junior school student , and I’m in Grade Three. I’m busy with my studying every day . Look at my course schedule.
Monday | Tuesday | Wednesday | Thursday | Friday | |
8:00—8:45 | Maths | Chinese | English | Maths | Chinese |
8:55---9:40 | English | Maths | Chinese | Chinese | Computer |
10:00---10:45 | Art | Physics | Biology | Politics | Computer |
10:50---11:40 | P.E. | English | Maths | Chemistry | English |
13:00---15:45 | History | Geography | Physics | History | Maths |
14:00---14:45 | Music | Chemistry | P.E. | English | Biology |
14:55---15:40 | Chinese | Class Meeting | Politics | Chinese | Geopraphy |
1.The writer has an art class on _______.
A. Monday B. Tuesday
C. Wednesday D. Thursday
2.The writer has _____ Chinese classes every week .
A. 3 B. 4 C. 5 D. 6
3.How long will the writer rest for lunch-time?
A. 60 minutes B. 70 minutes
C. 80 minutes D. 90 minutes
4.The writer has ______ classes only on Monday and Wednesday .
A. art B. music
C. biology D P.E.
5.The writer can send and receive e-mails from ____ to _____ in computer class on Friday.
A . 8:00; 9:00 B. 8:55; 10:45
C. 10:00; 11:40 D. 14:00; 15:40
从方框内A-J选项中选出能填入空白处的最佳选项补全对话(有两项是多余的)
A: Good morning! Can I help you?
B: Yes, please. _____1._______
A: For your mother?
B: Yes. Mother’s Day is coming. I am thinking of buying her a present. ___2._____
A: Well, what about a dress? It’s made of cotton and we have many colors.
B: ____3._______
A: It’s 429 yuan.
B: _____4.______ I can’t afford it.
A: Why not buy this hat? ______5._______
B: Let me have a look. Mmm, that’s nice and the color must fit her.
A: ______6._____And the price is OK.
B: That would be fine. _______7.________ Here is the money. Thanks very much.
A: _____8._____
A: Only 158 yuan. B: But I don’t know what to buy. C: It’s my honor. D: How much is it? E: It’s the most fashionable this year. F: I would like to buy something for my mother. G: May I try it on? H: That costs too much. I: My mother must like it. J: I’ll take it. |