下列昆虫的发育分别属于不完全变态发育和完全变态发育的是（ ）

某同学想从含铁、铜，银三种金属的滤渣A中分离回收铜和银，设计如图流程：

①滤渣B的成分是____ ，滤液D所含溶质的成分有____ （填化学式）．

②步骤①处在进行过滤操作时用到的玻璃仪器有____ ．

③写出CuO与H₂SO₄反应的化学方程式____ ．

④写出步骤③中得到Cu的化学方程式　____ ．

以盛产伊犁马、哈萨克羊著称的牧区是（　　）

根据短文理解，从A、B、C、D四个选项中选择最佳答案填空。

    Do you think of your parents? "Yes, of course," you may answer, "I buy a present for my mother on 1. And I give my father a present on Father's Day, 2. "Then what about the other days of a year? Always 3 to think of your parents, not just on some important days.

    I have a friend who 4 alone, because her parents live in another city. One day I went to see her. We had a nice chat. Then she wanted to make a 5. She dialed the number, but then she put the phone 6. After about ten seconds, she dialed the number again, "Hi, Mum……"

    Later I asked, "Why did you dial the number 7?" She smiled, "My parents are old. They can't get close to the telephone 8. I always do so when I call them. I just want to give them 9 time to answer the call."

    My friend is a good girl. She is always 10 her parents. You also want to be a good child, right? So why not learn from her?

Do you like this dog?