Arbitrariness of language makes it potentially creative, and （） of language makes learning a language laborious. For learners of a foreign language, it is this feature of language that is more worth noticing than its arbitrariness.

Digging the garden with a spade is a very_____task.<br/>I am exhausted after such two hours' work. A: industrious B: manual C: conscientious D: laborious

Digging the garden with a spade is a very ()task. I am exhausted after such two-hour's work. A: industrious B: manual C: conscientious D: laborious

8. of language makes it potentially creative, andof language makes learning a language laborious. A: Conventionality, arbitrariness B: Arbitrariness, displacement C: Arbitrariness, conventionality D: Conventionality, displacement

Digging the garden with a spade is a very _____ task. I am exhausted after such two hours work.?xml:namespace&gt; A: industrious B: manual ?xml:namespace&gt; C: conscientious D: laborious

painstaking effort 未知类型：{'label': 'questionDesc', 'content': '选出单词的同义词', 'isMemberControl': 0, 'type': 181} 未知类型：{'label': 'source', 'content': '2018年6月 六级 卷二 仔细阅读2', 'isMemberControl': 0, 'type': 181} A: painful experience B: labor cost C: laborious ordeal

听力原文：Learning a language is a laborious process, and adjusting to the subtle cultural differences require much more time and patience than anyone can imagine.（） A: It requires imagination in learning a language. B: It takes time and effort to learn a language. C: The cultural differences are more important. D: Learning a language can be easier than anyone thinks.