What is the distinction between competence and performance How is the distinction related to that between langue and parole

Chomsky distinguished the two terms of competence and performance. A language user’s underlying knowledge about the system of rules is called his linguistic competence. Performance refers to the actual use of language in concrete situations.
Saussure distinguished the linguistic competence of the speaker and the actual phenomena or data of linguistics (utterances) as LANGUE and PAROLE. While parole constitutes the immediately accessible data, the linguist’s proper object is the langue of each community; the lexicon, grammar, and phonology implanted in each individual by his upbringing in society and on the basis which he speaks and understands his language.
Chomsky pointed out that his distinction between competence and performance is related to the langue-parole distinction of Saussure; but he does not accept the view of seeing langue as a mere systematic inventory of items. According to Chomsky, the task of a linguist is to determine from the data of performances the underlying system of rules that has been mastered by the language user. Saussure believed that language was a social product and while Chomsky studied competence and performance on the basis that "linguistic theory is concerned primarily with an ideal speaker- listener, in a completely homogeneous speech-community who knows its language perfectly". He considered competence a property of the mind of each individual. Saussure studied language from the sociological viewpoint while Chomsky studied language by taking the psychological viewpoint.

Why did one scientist expose birds to artificial daylight

A:To test the relationship between daylight and a disease of the glands common to birds. B:To test the relationship between daylight and migration. C:To test the relationship between migration and temperature. D:To test the relationship between daylight and changes in the season.

According to the passage, _____.

A:there is a link between changes in the seasons and crime patterns B:crime is not linked to the cycle of the weekdays C:there is a sure connection between murder and hot weather D:there is a connection between robbing and murder

在成绩中要查找成绩≥80且成绩≤90的学生，正确的条件表达式足______。

A:成绩Between 80 And 90 B:成绩Between 80 To 90 C:成绩Between 79 And 91 D:成绩Between 79 To 91

在成绩中要查找成绩≥80且成绩490的学生，正确的条件表达式是______

A:成绩Between 80 And 90 B:成绩Between 80 To 90 C:成绩Between 79 And 91 D:成绩Between 79 To 91

在成绩中要查找成绩≥80且成绩≤90的学生，正确的条件表达式是

A:成绩Between 80 And 90 B:成绩Between 80 To 90 C:成绩Between 79 And 91 D:成绩Between 79 To 91

103. Can you _____ the difference _____ American English and British English?

A:tell; among B: judge; between C: tell; between D: say; between'

There are differences in spelling and pronunciation_______ AmE and BrE. That means AmE is more or less different _________BrE.

A: between; from B: from; in C: in; between D: from ; between