18.He wants to know why empty glass bottles can float(漂浮) on the water. He should ask his C teacher for help. A. music B. art C. physics D. maths 相关知识点: 试题来源: 解析 答案见上18.C[提示:考查名词辨析。 句意:他想知道 为什么空玻璃瓶会浮在水面上。 他应该向他的 老 师寻求...
Mr. Allen held out a glass of water with three ice cubes in it. “Why do things float?” he asked the class. No one said a word. The whole class was 1 . “Anyone?” Mr. Allen smiled at his students. “Let’s brainstorm some answers.” He swirled (旋动) the glass gently....
首季仅28元,立即抢购 Why does airplane food taste bad 热度52 付费 Why does an iron nail float on ... 热度52 付费 Why does hot air balloon float 热度52 付费 Why does ice float on water ? 热度52 付费 Why does oil float on water ...
`dad joke` noun - a dad joke is a short joke, typically a pun, presented as a one-liner or a question and answer, but not a narrative. Generally inoffensive,…
WaterProperties of WaterRelevance to LifeBiologySince she was a child, Alice would spend winter breaks at her grandparents' farm. But for the very first time, she had decided to stay to forego the farm visit, opting instead to discuss with the Professor her recent explorations. Alice's mind...
22.A.细节理解题.根据文章最后一段的"…at this point the water is dense enough for the egg to float."可知加入盐的水密度比较大,可以导致蛋漂浮起来,故答案为A. 23.C.细节理解题.根据文章最后一段"…the denser the liquid is,the easier it is for an object to float in it."可知液体的密度比较...
If steel is heavier than water, why are ships able to ___ on the sea? A. float B. fly C. fall D. flow 相关知识点: 试题来源: 解析 【答案】A【翻译】如果钢比水重,为什么船能在海上漂浮?【解析】考查动词辨析。A. float 漂浮;B. fly 飞;C. fall 落下;D. flow 流动。根据语境可知...
1. Explain why water is such a good solvent for so many different solutes? 2. Why should solutes be added to water rather than water added to solutes ? Explain why some substances dissolve in water while other substances do not. Give examples. ...
Water is a special substance for several reasons, and you may have noticed an important one right in your cold drink: ice. Solid ice floats in liquid water, which isn't true for most substances. But why? George Zaidan and Charles Morton explain the science behind how how hydrogen bonds ke...
Why do some substances not dissolve in water at all? Why does gasoline not dissolve in water? Why does a balloon become smaller when placed in a freezer? Why does sugar dissolve well in water? Why does evaporation cause cooling? Explain why ice cubes made from impure (even tap) ...