We all share a built-in mental model that the world is continuous, unless our eyes tell us differently. This built-in mental model tells us what to “see” in a part of the eyes that doesn’t actually see anything. This “blind spot” model causes us to perceive made-up information(a continuation of surrouding patterns) What does the red part mean? 冲刺（三）1
The objections advanced by a handful of opposing economists ,claiming that free-traders exaggerate the gains from trade of forget that good trade policy is best rooted within a package of reforms, are mostly setting up and knocking down straw men. “the objections” refers to objection to free trade. What does the red part mean? 冲刺（三）2
There are two sentences:
People in poor countries fail to enjoy a higher standard of living
People in underdeveloped countries are deprived of better living conditions.
What’s the differences between the two sentences? 冲刺（三）4
We want to choose a group of students for an advanced mathmatics class.
We want to organize a group of students for an advanced mathmatics class.
Which is better ?Why? 冲刺（四）1
setting up and knocking down straw men is a phrase which means "cheap shot". You can imagine the effort one has to put into to set up a straw man and then knock him down. 反自由贸易的言论大多避重就轻.
People in poor countries fail to enjoy a higher standard of living
----- simply states a fact.
People in underdeveloped countries are deprived of better living conditions.
----- implies unfairness
The next two sentences should be read slightly differently. The difference is actually in the word "group". See the highlight below. It is hard to say which one is better.
We want to choose a group of students for an advanced mathematics class.
We want to organize a group of students for an advanced mathematics class.