The overall result has been to make entrance to professional geological journals harder for amateurs, a result that has been reinforced by the widespread introduction of refereeing, first by national journals in the 19th century and then by several local geological journals in the 20th century. ...
外研版七下M4U1的文章提到...Students will use computers on the Internet. They
can ask their teachers questions by Internet, telephone or emails.请问后文的 Internet, telephone or emails 这些跟电，网络相关的词固定搭配不也是跟on的吗？为什么会换成by？这个by...
不明白下面句子中的 For the Japanese festival Obon 为什么要用介词 for，而不是用其他介词（比如 At, On 等）：For the Japanese festival Obon, people should go to clean graves and light incense in memory of their ancestors. 在日本盂兰盆节，人们要扫墓、烧香...
Meanwhile he had never ceased to work at his art; but, soon tiring of the studios, entirely by himself. He had never been so poor that he could not buy canvas and paint, and really he needed nothing else. So far as I could make out, he painted with great difficulty, and in his unwillingness to accep...
...存全部人类知识的要求。A译文：We have to admit that even with the highest intelligence, the biggest memory capacity and the longest life, we humanity still can’t meet the requirements for understanding and storing all human knowledge.B译文：What we have to admit is that even if hum...
请老师分析一下这句句子的成分，特别是后的 the issues the occeans face：His mission has gradually evolved, from underwater photographer to advocate, as his pioneering new techniques bring the world ever closer to the issues the oceans face.
1. Miss Chan is talking to _____ children.2. My sister is reading _____ book.3. Mom is cooking _____ fish now.请问：上面三题的横线上应该填a、an、the还是不用填呢？与前面的现在进行时有关吗？
... It was a game without rules, of which the sole aim seemed to have been to drive the ball through the opponent's goal.怎么理解这里的“to have been”， 即为什么不是...the sole aim seemed to drive...？the sole aim seemed to have been to drive... ...
Whether the Government should increase the financing of pure science at the expense of technology or vice versa 【主语从句】//often【频度状语】 //depends on【谓语动词】// the issue of which is seen as the driving force.【宾语】在该句中，最后这部分，of which…force...