【判断题】Language errors in a research paper may damage its quality severely. ( )
【简答题】汽车的主要参数分几类?各类又含有哪些参数?各质量参数是如何定义的?
【判断题】According to Krashen, acquisition refers to subconscious learning in the natural environment that is not influenced by explicit instruction in a second language ’ s rules and system or about errors (...
【判断题】A large proportion of grammatical errors in second language acquisitioncan be explained by mother tongue interference.
【单选题】_________demands that there are no errors in the usage of language—— in grammar, spellings, punctuations etc.