根据短文的内容,从短文后的选项中选出能填入空白处的最佳选项,选项中有两项为多余选项。
Children start out as natural scientists, eager to look into the world around them. You only have to share your children’s curiosity. 16 Listen to their question. I once visited a classroom of seven-year-olds to talk about science as a job. The children asked me "textbook questions" about schooling, salary and whether I liked my job.
17 Finally I said, "Now that we're finished with your lists, do you have questions of your own about science?" After a long pause, a boy raised his hand, "Have you aver seen a grasshopper(蚱蜢)eat leaves? When I try eating leaves like that, I get a stomachache. Why?”
18 . Studies over the past 30 years have shown that, after asking a question, adults typically wait only one second or less for an answer, no time for a child to think. When adults increase their wait time to three seconds or more，children give more logical, complete and creative answer. Watch your language. Once you have a child involved in a science discussion，don’t jump in with "That's right" or "Very good". 19 But in talking about science, quick praise can signal that discussion is over. Instead, keep things going by saying, “That’s interesting” or “I'd never thought of it that way before, or coining up with more questions or ideas.
20 Real-life impressions of nature are far more impressive than any lesson children can learn from a book or a television program. Let children look at their fingertips through a magnifying(放大) glass, and they ’ 11 understand why you want them to wash before dinner.
A. Show；don't tell,
B. When I finished answering , we set facing one another in silence.
C. Here are some tips to follow.
D. Give them time to think.
E. Put forward more ideas or answers.
F. This discovery is highly appreciated in the field of science.
G. These words work well when it comes to encouraging good behavior.