单词：strontium unit
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[00:00.00]Unit 2 COME TO MY HOUSE [00:17.40]unit 2 page 10 Listen, sing and act. [00:24.66]LET'S HAVE FUN [01:47.42]unit 2 page 10 PIGGY BANK: [01:54.39]cook eat play [02:20.25]unit 2 page 11 Listen,say and act. [02:31.61]come to my house,come to day
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Words in unit 3 [00:03.77]第三单元的单词 [00:07.55]school [00:08.31]学校 [00:09.06]classroom [00:09.82]教室 [00:10.58]library [00:11.39]图书馆 [00:12.20]borrow... [00:12.88]（向某人、从某处）借 [00:13.56]make [00:14.39]做；制
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Words in unit 6 [00:04.02]第六单元的单词 [00:08.05]fever [00:09.00]发烧 [00:09.95]stomachache [00:10.74]胃痛 [00:11.52]headache [00:12.32]头痛 [00:13.11]toothache [00:13.57]牙疼 [00:14.03]cough [00:14.81]咳嗽 [00:15.60]problem [00:16
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[ti:UNIT 2 Colours and Clothes Lesson 16: Unit Review] [00:00.86]UNIT 2 第二单元 [00:02.65]Colours and Clothes 颜色和衣服 [00:06.62]Lesson 16: 第16课： [00:08.53]Unit Review 单元复习 [00:11.44]Ⅲ. [00:13.24]Listening and Speaking 听一
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[ti:UNIT 6 Let's Go! Lesson 48: Unit Review] [00:01.53]UNIT 6 第六单元 [00:03.33]Let's Go! 我们出发吧！ [00:05.57]Lesson 48: 第48课： [00:07.23]Unit Review 单元复习 [00:09.79]Ⅲ. [00:11.24]Listening and Speaking 听一听，说一说
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Soon after taking up his position, Davy began to bang out new elements one after anotherpotassium, sodium,magnesium, calcium, strontium, and aluminum or aluminium, depending on which branch of English you favor. 上任不久，戴维开始宣布发现一
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