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问题 while protecting the environment中省略了主语和be动词吗

The challenge we face is to find ways to meet the needs of our growing population while _______(protect) the environment.这里填protecting是省略了主语和be动词吗？但是主语不是the challenge吗?

问题 for twice as long as的用法

...ring that time the districts that stayed closed longest forced all or some of their children to learn remotely for twice as long as schools in Ireland.这里for是什么成分？去掉可以嘛？Indians are the world's biggest book worms, reading on average 10.7 hours a week, twice as long as Ameri...

问题 the way one heals or dies的意思

But I realized it had been more than two years since I had read most of those titles. I had stopped reading gradually, the way one heals or dies.请问：the way one heals or dies表达什么意思，怎样理解它与前面句子(I had stopped reading gradually)语义上的衔接。谢谢老师！

问题 这里是两个介词词组分别修饰谓语动词吗

...？And I laughed to myself at the men and the ladies. Who never conceived of us billion-dollar babies.问题1: laugh to oneself表示暗自窃喜。整句话是表示:“我心里暗自窃喜嘲笑着这群人吗”？问题2:这里Who作为关系代词，引导非限制性定语从句，补充说...

问题 请问在这里的现在完成时为什么不用完成体

...原文出自：经济学人，标题：Canada，China，Mexico and the art of retaliation 讲的就是美国对三国的关税政策。出自第九段，倒数第二行。

问题 Which…grow well还是Which…grow better

Which kinds of vegetable grows _______ (good) in your hometown? 所给答案是better。但可以填well吗？请问这个句式中的Which…grow well还是Which…grow better有什么区别？（除了意思上的区别外）

问题 orange可数和不可数也不简单

...ange 当然是可数的，如 one orange, two oranges, some oranges, a lot of oranges 等，但如果是“一瓣橘子”“两瓣橘子”“三瓣橘子”呢？它还可数吗？如何表示？谢谢老师！总感觉英语答疑网的专家老师是万能的，所以一遇到英语疑难问题...

问题 请问句中的which的先行词是？

...sitors whose surname is Zhu can get free tickets for several viewing areas of the Ming Dynasty Tombs, which can save 165 Yuan per person.网上译文：在4月2日至4日的清明小长假中，只要是姓“朱”的游客就可来明十三陵享受长陵、定陵、昭陵和神路四大景点免...

问题 分析:I hate it when they talk with their mouth full

I hate it when they talk with their mouth full of food.老师，帮我分析一下。

问题 this property being called magnetism的分析与理解

...; 王运编著）p58的一个句子：Certain substances have the property of attracting iron，this property being called magnetism .某些物质具有吸引铁的特性，这种特性（被）称为磁性。对于这个句子中的this property being called magnetism ，我很困惑，我认为应...

问题 shouldn't have done / needn't have done 存疑

Of course the photocopier doesn't work. _______ it on first?A. Needn't you have switched  B. Shouldn't you have switched请问老师，A和B 都对吗？

问题 as...as 作定语的用法疑问

...ully adjusted things — mountains, plains, rivers, lakes — to the scale of the island itself. A mountain 12,000 feet high would be a horrible monster here, as wrong as a plain 400 miles long, a river as broad as the Mississippi.as wrong as a plain 400 miles long教材上说是做补语，a river ...

问题 myopia什么意思？

In those early years writers frequently discussed the effects of television on family life. However, a curious myopia afflicted those early observers: almost without exception they regarded television as a favorable, beneficial, indeed, wondrous influence upon the family.请问上文中的a curious ...

问题 than比较分句补全分析

He saw the look of beneficent happiness on the Old Gentleman's face - a happier look than even the fuchsias and the ornithoptera amphrisius had ever brought to it - and he had not the heart to see it wane.他看了老绅士一眼，只见老绅士满脸笑容，对自己的乐善好施感到幸...

问题 关于adv+n突然加在一个完整的句子中的问题

Direct measurements of energy balance components are rarely made under field conditions, which can be estimated using meteorological data particularly data atshort time intervals.请问老师，这里particularly data是什么用法啊，是不是在前面加个逗号更好？