职称英语理工类概括大意练习 1 It is important to _ke your child interested in scien _ from an early age. Most young children ask a lot of questions and you should give careful scientific answers. Dont only give facts, but try to give explanations as well. 2 Scien _ is not just knowledge; it is a way of thinking, a method of finding out about the world. We see something. We try to explain it, and we test our idea by setting up an experiment. One day you e 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 _y be a third explanation. 3 Ask your child to get a pie _ of string, some salt, a glass of water and an i _ cube (冰块). Tell her to put the i _ in the water, and then put one end of the string on the i _, leaving the other end over the side of the glass. Put a little salt on the i _. Wait a minute, and then pull the string; it should be attached to the i _. Ask the child: What has happened? 4 Probably she wont know. Ask her whether fresh water or salt water freezes into i _ 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 i _box 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 i _ into water. Then the salt went away into the water and the i _ 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, _ you her idea and (taking care because of the heat) you can test it in the kitchen. 1 Paragraph 1 . 2 Paragraph 2 . 3 Paragraph 3 . 4 Paragraph 4 . A What exactly is scien _? B How do you find an explanation? C What topics do you need? 模板,内容仅供参考