单项选择题

According to this passage, research in this area is characterized as ______.

A．empirically observable
B．often impossible to observe directly
C．poorly defined in the research literature to date
D．easier to theorize about than to carry out directly

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热门试题

单项选择题

The reference to Naiman and his colleagues (1978) in paragraph 4 is made ______.

A．to point out the advantages of an analytical approach
B．to point out that language learning strategies can be identified
C．to point out that different learners learn differently
D．to point out the uniqueness of language learning situations

单项选择题

Television ______.

A．has distorted the propose of slogans
B．has kept consistent the nature of human interaction
C．has made political images personal and shorter
D．utilizes slogans well