It is a curious paradox that we think of the physical sciences as “hard”， the social sciences as “soft，” and the biological sciences as somewhere in between. This is interpreted to mean that our knowledge of physical system is more certain than our knowledge of biological systems， and these in turn are more certain than our knowledge of social systems. In terms of our capacity of sample the relevant universes， however， and the probability that our images of these universes are at least approximately correct， one suspects that a reverse order is more reasonable作者: melodyhata200 时间: 2008-5-14 22:56 标题: 雅思听力Sentence completion六大攻略 从近几年的雅思命题趋势来看，主观类题目，如 sentence completion/ multiple choice with more than one answer/ labeling 等正成为主导题型，其中最常见就是sentence completion，今天就和大家聊一聊该类题型的六点注意事项。
Well, last week we talked about buying camping equipment and today I.d like to talk to you about buying a bicycle. A simple enough exercise, you might imagine, but there are lots of things to look out for to make sure you get the best deal for your money. Well, the range of bicycles is enormous . there are racing bikes, touring bikes, mountain bikes or just plain ordinary bikes for riding round town.
Wilson 建议烤鸭将听到的重读的和重复的答案都在一边稍微记录一点，然后看哪一个词可以填到题目中；如果不确定应该把记录好的单词填进哪一道题目中，请将所有没有填好的题目都写上这个词，最低可以保证有一道题目是对的。
例如：Contrary to what you might imagine, the size of the cycle is not determined by the size of the wheels (except in children's cycles), but by the size of the frame. So Q20 you'll need to measure the length of your legs and arms to get a frame that is the right size for you.
The size of the bicycle is determined by the size of the (20) ______________,