_____ has been introduced to the students to help themmake progress.

s population is expected toincrease to about 15 billion in 2040, _____ it will start to decline slowly

It is said Yangzhou Taizhou Airport hasbeen in service since May 9th 2012.—Really !

_______apple _______ day keeps _______ doctor away!

填入下面文段空白处的词语，最恰当的一组是我们曾说，中学生初学文言文时 ① 不要依赖译文。 ② 并不是说在整个学习过程中绝对不去参看译文。其实， ③ 肯动脑筋， ④ 不盲目机械地看待译文， ⑤ ，只要译文不是太差，看看译文也无妨。有时候把译文跟注释对照起来揣摩学习， ⑥ 不失为一种可行的方法。 ①②③④⑤⑥