A：氧气、甘油
B：脂肪酸、钾离子
C：葡萄糖、甘油
D：钾离子、氨基酸
物体做斜抛运动，当到达最高点时（ ）
财富的获取有多种办法和途径，下列属于通过合法途径和手段获取财富的是（ ）
①上班获得工资 ②写文章挣稿费 ③赌博的盈利 ④搞发明创造获得收益
A：Wow! What a great model plane! Is it yours，Jack?
B：Yes，it's mine．
A：____
B：For two days．
B：At Green Store。
B：It's six dollars．
B：I've given it to Peter．
B：Because he likes it a lot．
A．How much is it?
B．Why did you give it to Peter?
C．How long have you had it?
D．Where did you buy it?
E．Why are you selling it?
F．Where's your old model plane?
G．Can I have a look at your old model plane?
