问题
选择题
| 如图所示，用久的灯泡其玻璃外壳会发黑，这是下面哪些物态变化现象造成的（ ） ①熔化 ②凝固 ③汽化 ④液化 ⑤升华 ⑥凝华． A．钨丝先①③再④② B．钨丝先⑤后⑥ C．钨丝先⑤再④② D．钨丝先①③再⑥  |
答案
答案：B
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| 如图所示，用久的灯泡其玻璃外壳会发黑，这是下面哪些物态变化现象造成的（ ） ①熔化 ②凝固 ③汽化 ④液化 ⑤升华 ⑥凝华． A．钨丝先①③再④② B．钨丝先⑤后⑥ C．钨丝先⑤再④② D．钨丝先①③再⑥ |
答案：B
A teacher teaching Maths to seven-year-old Laiq asked him, " If I give you one apple and one apple and one apple, how many apples will you have?" Within a few seconds Laiq 31 confidently, " Four!" The confused teacher was expecting a（n） 32 correct answer, three．She was disappointed． "Maybe the child did not listen 33 " she thought． She 34 , "Laiq, listen carefully． If I give you one apple and one apple and one apple, how many apples will you have?" Laiq had seen the 35 on his teacher' s face． He 36 again on his fingers． But within him he was also 37 the answer that would make the teacher happy． This time hesitatingly he replied, "Four． " The disappointment stayed on the teacher' s face． Suddenly she 38 that Laiq liked strawberries．She thought maybe he didn’t like apples and that was why he couldn’t answer the question．This time with an excitement in her 39 she asked, " If I give you one strawberry and one strawberry and one strawberry, then how many you will have?" Seeing the teacher 40 , young Laiq calculated on his fingers again． There was no pressure on him, but a little on the teacher． She wanted her new 41 to succeed． 42 a hesitating smile young Laiq replied, "Three?" The teacher now had a 43 smile． Her approach had succeeded． She wanted to 44 herself．But one last thing remained． 45 she asked him, "Now if I give you one apple and one apple and one more apple how many will you have?" Confidently Laiq answered, "Four!" The teacher was 46 "How Laiq, how?" she demanded in a little annoyed voice． In a voice that was 47 and hesitating young Laiq replied, " Because I already have one 48 in my bag． " The story tells us: 49 someone gives you an answer that is 50 from what you expect, don' t think they are wrong． There shall be an angle that you may not have thought about yet．
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