Suddenly, an idea comes to mind. Suppose an average — or below-average in my case — physics student could design a workable atomic bomb on paper? If I could design a bomb, almost any intelligent person could.suppose...虚拟句省略了then he will be exempted from the disaster of being ordered ...
2021年四级真题：For today's youth, books, newspapers and magazines have less and less of a presence in their daily lives.more/less of a +单数名词是一个用法，但是这里less and less of a presence中的presence，出席出现是一个不可数名词。为什么出现这种情况，...
1. Chinese is the language spoken by the ______ number of people in the word, but it’s not as ______ as English.A. largest; widely spoken B. large; wide spoken C. larger; widely speaking &nbs...
Since用作介词时，通常是后接名词、代词、动名词作宾语。如：
I’ve worn glasses since my childhood. 我从小就戴眼镜。
We’ve come fifty miles since lunch. 我们午饭后走了五十英里了。
She’s been working in a bank since leaving school....
Mother and son lost contact when Nicholas was in his early twenties. 尼古拉斯20岁出头的时候母子就失去了联系。这里的mother and son（母子）前面没有用冠词，好像原来见过，father and son（父子）也不用冠词的，这是一种习惯吗？如果是 mother and ...
In another sea-chest, which contained the belongings of a ship's officer, there was an unfinished letter which had been written on March 14th, 1943. The captain learnt from the letter that the name of the lost ship was the Karen.这里Karen首次提到，为什么要加 the？
—Does your sister work as a teacher in Canada? —No, but she once ______ there for five years． A．taught B．had taught C．has taught D．would teach改题答案为A,可不可以用完成时啊，谢谢！
... food, the stuff that is correctly called junk and should really carry warning labels? It’s not because fresh ingredients are hard to come by.Supermarkets offer more variety than ever, and there are over four times as many famers’ markets in the U.S. as there were 20 years ago. Nor is it fo...
He points out that none of the conventional explantions for the rise in unwed motherhood such as the lack of jobs for inner-city males or the spread of welfare benefits explains why illegitimacy has also mushroomed among middle-class whites.他指出，没有哪个传统解释可以说明...
bitcoin advocates will point to a number of possible advantages, from the ability to use the blockchain to track things other than single money to the built-in support for "smart contracts".
...important framework for development and significant progress has been made in a number of areas. 其中"provided an important framework for development"一句是修饰“Goals"的定语从句吗？如果是，为什么会用成”provided"而不是“providing"