【单选题】In the last sentence of Para. 2, the word 'approach' means______.
C.
speaking to someone for the first time
D.
method of doing something
【判断题】安全气囊只要没有引爆,就可一直使用。( )
【单选题】approach means teachers provide explanation on grammatical rules for learners. ( )
【单选题】__ is over 1000. [ ]
【单选题】approach means learners yze the grammar explanation for themselves. ( )