unit1.1 a writer who pay great attention to expressing the exact english will never be satisfied with a word which can not express an idea accurately.
u1.2 for the reader can easily understand what kind of feelings and thoughts we want to convey, we need to be careful to choose the words we used in article.
u1.3finding the most suitable word is in no sense easy. but there is nothing like the delight and excitement we shall experience when we pick up such a word.
u1.4 if we can use language accurately we are in a position to totally understand the subject matter.
u2.1 the result is, the sea, the cradle of many civilizations, is seriously polluted. it is the first of the seas that has been made to suffer from a situation resulting from development mixed with an irresponsible mentality.
u2.2 further, while the places such as cannes and tel aviv dispose of their wastes through a pipe stretching out half a mile from the shore, most cities do not bother to do that but simply dump their sewage directly into the sea along the coastline. u2.3 there is an even bigger hazard hidden in the seafood dishes that are forever so appealing to those holiday makers.
u2.4 factories are set up around the coastline, few of which, including the most sophisticated, have been equipped with a satisfactory system for dealing with their effluents.
u3.1 einstein's natural ability of intuitively getting to the essence of a subject and unusual awareness of beauty were the key to his great discoveries.