①坚持公有制的主体地位　②以共同富裕为根本目标　③国家对经济实行宏观调控　④市场对资源配置起基础性作用

读句子，选择恰当的答语。

How many crayons do you have?____   a. Yes, it is.

Look at my new crayons! ____               b. I can see 12.

Is it in your toy box?____                       c. I have 16.

Do you like apples?____                        d. Oh, how nice!

I don't like watermelon. ____              e. No, I don't.

How many kites do you see? ____         f. Me, neither.

Let's buy some fruit____                      g.OK!

请任选1种方法的数据，计算合金中锌的质量分数（写出计算过程及结果）。

一物体从斜面顶端由静止开始匀加速下滑到斜面底端，最初3s内经过的路程为s₁，最后3s内经过的路程为s₂，已知s₂﹣s₁=6m，s₁：s₂=3：7，则斜面长度为____m．

辨字组词。

茸____    副____    魔____    狐____

饵____    幅____    磨____    孤____