teaching aims:1. enlarge the students’ vocabulary 2. get the students to know about space explorationteaching important points:learn the words by heart and try to use themteaching different points:1. how to develop the students’ imagination2. how to use the new words to solve problemsteaching methods: 1. practice to get the students to master what they’ve learnt2. discussion to make every student work in classteaching procedures and wa
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