问题
解答题
| 一种商品现在售价200元，比原来降价了50元，比原来降低了______ A.20% B.
|
答案
50÷（200+50）
=50÷250，
=
，1 5
=20%；
故答案为：A，D．
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| 一种商品现在售价200元，比原来降价了50元，比原来降低了______ A.20% B.
|
50÷（200+50）
=50÷250，
=
，1 5
=20%；
故答案为：A，D．
| 用所给单词的适当形式填空。 |
| 1. I already _ ( finish) my homework. What about you? 2. — Has he finished his homework? —Yes. He (finish) it ten minutes ago. 3. —Has Mary (buy) a street map? —No, not yet. She (sweep) the floor just now. 4. — Have you cleaned the room? —Not yet. I ______ ______(do) it in a minute. 5. _ you ever __ (buy) a newspaper? |