After people have learned that magnets attract things, centuries passed___they took note of the fact that magnets sometimes also repel things. A.beforeB.untilC.afterD.since 答案 A直译为:“在他们注意到……这一事实之前已经过了几百年,也就是说,几百年以后才……”全句可译为:“人们早已知道了...
After people have learned that magnets attract things, centuries passed___they took note of the fact that magnets sometimes also repel things. A. before B. until C. after D. since 相关知识点: 试题来源: 解析 A 正确答案:A 解析:before应该理解成(几百年过去了,人们)才……;如果用after应该是...
根据“There is a new train that uses powerful magnets to travel more quickly...Besides, in medicine, the powerful magnet is used to help patients...The powerful magnet can also be seen in many fields”可知,磁铁广泛应用于火车、医疗、太空、工业以及教育等多个行业,因此非常有影响力。故选A。
If your magnet is strong enough, it might even attract the cereal flakes themselves without smashing them up. This may seem like nothing more than a fun little experiment with strong magnets, but it's actually a small-scale example of a widely used industrial and scientific process. Various ...
Scientists are using magnets in new ways. There is a new train that uses powerful magnets to travel more quickly. Magnets lift the train above the track(轨道)and push the train forward. The train appears to be moving as fast as wind! They are much faster than the trains we know. Beside...
The two ends of a magnet are its poles.Every magnet has a north pole and a south pole.Have you ever played with trains that have magnets?Sometimes,you try to put two train cars together,but push away from each other.Then you turn one of the cars around.The two cars attract each ...
Magnets attract things made of iron towards themselves. Perhaps you have some paper stuck to your fridge with a magnet. How does it work? The fridge has things that are made of iron, and the magnet tries to pull these iron things towards itself. It holds the paper to the fridge by the...
How does the fridge attract the paper?important role in our safety. If it did not exist, the D. The fridge has the power of magnetism.sunshine would easily burn us.3. According to the fourth paragraph, what does the Magnets attract things made of iron towards underlined word " compass" ...
‘support the troops’ ribbon magnets for local people to put on their cars. Millar recalls her parents, sceptical of the intervention, navigating the expectations accompanying the ribbon and its awkward invocation. They displayed the ribbon out of some sense of obligation and genuine care for the...
the author explains how the properties of materials result from the way they are composed of atoms and why it is they have the properties they do: for example, why copper and rubies are colored, why metals conduct heat better than glass, why magnets attract an iron nail but not a brass ...