题目内容
（请给出正确答案）
One explanation given by scientists for the crop circles is that they are made by ______.
A．airplane crashes
B．new farming techniques
C．unknown flying objects
D．air movement
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更多“One explanation given by scien…”相关的问题
Some scientists' explanation of dreams______.
A．is widely accepted by the majority
B．gives us an exact answer to the problem
C．does not give an outlet for our wishes
D．offers a meaningful approach to the problem
Dear Customer,
Congratulations! You have just purchased one of the world's most sophisticated microwave ovens. This appliance has been designed with your convenience in mind. It combines an array of special features with ease of use. State-of-the-art features include a temperature sensor so that you will never again have an overcooked or undercooked meal; a 24-hour timer so that you can prepare your food when you have time and have it ready to eat when you are; an automated defrosting system so that you can prepare frozen food with no extra waiting time; a programmable chime system to let you know when your food is ready; and an automatic self-cleaning system so that your oven is always fresh and ready for use.
All of these features and more are available to you at just the push of a button. It is so simple to use. Each feature is completely explained in this manual. Just follow the step-by-step instructions and you will be cooking delicious meals in no time at all! In addition, recipes for various entrees and desserts are included at the back of the manual to get you started on your new adventures in microwave cooking. This product has been designed to give you many years of trouble-free operation as long as the instructions are followed. If for some reason the product should fail, it is completely guaranteed for one year. A complete explanation of the warranty is included on page 15 of the manual. Additional instructions and recipes are available on our website.
Thank you again for becoming a Kitchen Appliances customer.
Sincerely,
M.S. Fujimoto
President
Kitchen Appliances, Inc.
Where would this letter most likely be found？
A．In a microwave manual
B．In the mail
C．In an advertisement
D．In a design store
What explanation does Sam give？
A．He wants everyone to attend.
B．He is too busy to go to meetings.
C．He was given the wrong information.
D．He does not have to go to the meetings.
One explanation for the different character of English people is that ______ .
A．they are geographically isolated from the European continent
B．they have nothing to do with the other Europeans
C．they like to keep quiet among their acquaintances
D．they tend to be reserved by nature
Teach Your Chlld Sclence
1．It is important to make your child interested in science from an early age. Most young children ask a lot of questions and you should give careful scientific answers. Don't only give facts, but try to give explanations as well.
2．Science is not just knowledge; it is a way of thinking, a method of finding out aboutthe world. We see something. We try to explain it, and we test our idea by setting up an experiment. One day you come home and find the plant on the table has fallen over. You think it might be the wind from the open window or the cat, so you close the window, but leave the cat in and see what happens (you can also try leaving the window open and shutting the cat out). Of course, you remember there may be a third explanation.
3．Ask your child to get a piece of string, some salt, a glass of water and an ice cube (冰块). Tell her to put the ice in the water, and then put one end of the string on the ice,leaving the other end over the side of the glass. Put a little salt on the ice. Wait a minute,and then pull the string; it should be attached to the ice. Ask the child: “What has happened？"
4．Probably she won't know. Ask her whether fresh water or salt water freezes into ice first. If you live near the sea and have a cold winter, she should know fresh water freezes first as she will have seen that happen. Show her how to test the idea by half-filling two paper cups with water, adding salt to one. Then put them in the icebox and check every three minutes. Write the results in a table. The conclusion will be that salt changes the behaviour of water. Thinking about the string, we see the salt turned some of the ice into water. Then tho salt wont away into the water and the ice froze again leaving the string attached.
5．Then you can ask, "Will water with salt boil at the same temperature as water without salt？" She can think, tell you her idea andyou can test it in the kitchen. (take care because of the heat) A．What exactly is science？
B．How do you find an explanation？
C．What topics do you need？
D．How do you answer your child's questions？
E．Where does your child study science？
F．How do you set up the experiment on saltand water？
第 23 题 Paragraph 1______________
A．Because they take shorter to use.
B．Because they have more accurate spelling.
C．Because they can make you have a longer memory of the information.
D．Because they can give you a clearer explanation of the language points.
