【判断题】三大岩石中,沉积岩分布在地壳表层;岩浆岩分布在地表与地下深处;变质岩则分布在地壳强烈变动区域或岩浆岩周围。
【单选题】Topic 45 Session 1 (Vocabulary 4-6) Read the sentences and choose the correct words or phrases. The membership / software life cycle explains why there are so many jobs in software development.
【单选题】Topic 45 Session 1 (Vocabulary 4-5) Read the sentences and choose the correct words or phrases. ________ are most commonly found in classrooms.
【单选题】Topic 45 Session 1 (Vocabulary 4-2) Read the sentences and choose the correct words or phrases. The _________ is a group that supports technological innovation.
B.
professional development