皮皮学，免费搜题
登录
搜题
【单选题】
There are three things about “ word ” , which are basic for language learners and researcher. They are _______.A.
the sound, the form, and the meaning
B.
the origin, the form, and the meaning
C.
the sound, the origin, and the meaning
D.
the sound, the form, and the origin
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】check in 视频作品
【简答题】(Check-in at the airport 实训视频) The passenger had_____ to check and ______carry-on baggage.
【简答题】润滑油的作用有哪些？
【简答题】(Check-in at the airport 实训视频) The passenger is still______ and the ticket is in the order.