A normal lesson should have the all the stages discussed in this unit and the stages should be in fixed order.（）

One function of a language can only be expressed by one structure.（）

The natural order hypothesis is presumed by Krashen to be the result of the learned system, operating free of conscious grammar.（）

For Krashen, the affective filter is the principal source of individual difference in second language acquisition.（）

Krashen believes that adults are better language learners, while children are better language acquirers.（）

The goal of foreign language teaching is to produce over-users of monitor.（）

Conscious knowledge of rules does not help acquisition according to Krashen.（）

In general, a rising intonation is seen as being more impolite that a falling one.（）

The ways in which words follow one another and are related to one another is called the syntagmatic dimension of language, the dimension of “chaining” or “sequencing”.（）

Minimal pairs are pairs of words that differ only in one sound.（）