In English, certain nouns are spelt with _____capital letter at _____ beginning of the word; for example, names of places, such as the United States of America.

A．a; the

B．the; the

C．a; a

D．the; a

划线时采用拉线、吊线、线坠、直角尺互相配合，通过投影来引线的方法称为（）法。