四级英语

SECTION A [25 min.]In this section there are four passages followed by fifteen questions or unfinished statements, each with four suggested answers marked A, B, C and D. Choose the one that you think ...

Text BDiscovered a mere one hundred fifty years ago and manufactured commercially just half that long, aluminum today ranks behind only iron and steel among metals serving mankind. The key to its popu...

Text CPrices determine how resources are to be used. They are also the means by which products and services that are in limited supply are rationed among buyers. The price system of the United States ...

What we know of prenatal development makes all this attempt made by a mother to mold the character of her unborn child by studying poetry, art, or mathematics during pregnancy seem utterly impossible....

Most of us are taught to pay attention to what is said—the words. Words do provide us with some information, but meanings are derived from so many other sources that it would hinder our effectivenes...

Racket, din clamor, noise, whatever you want to call it, unwanted sound is America’s most widespread nuisance. But noise is more than just a nuisance. It constitutes a real and present danger to peo...

Computers monitor everything in Singapore from soil composition to location of manholes. At the airport, it took just 15 seconds for the computerized immigration system to scan and approve my passport...

Let children learn to judge their own work. A child learning to talk does not learn by being corrected all the time; if corrected too much, he will stop talking. He notices a thousand times a day the ...

2014年英语专业四级阅读理解练习题汇总12014年英语专业四级阅读理解练习题（1）22014年英语专业四级阅读理解练习题（2）32014年英语专业四级阅读理解...

现在我们要来学习情态动词+完成时的用法,当然包括了大家最关心的虚拟语气. 1. may和might+ 动词完成式此结构用于推测过去的行为。例如：She said that he m...