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ISO下设（）专门从事国际标准的制定和推广工作。
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1.__________ and ___________have been regarded as the most important factor affecting learning.
2.motivation in language learning is defined as “the extent to which the individual works or strives to learn the language because of a desire to do so and the satisfaction experienced in this activity”.
3.motivation comes from outside the individual for the sake of rewards.
下列关于Thread类的说法中,错误的是()
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