According to Krashen, there is only one way for human to acquire language. What is it?
论述旅游资源体验性评价、技术性评价的含义。
十八届四中全会提出，全面推进依法治国，总目标是（）
印前出版的步骤不包括下列哪步骤（） ["出片制版","打样","扫描","上光"]
阀门按用途和作用可分为（） ["A、截断类 ","B、调节类 ","C、止回类 ","D、分流类 ","E、安全类 ","F、其他用途类"]
出口补贴
