题目:
根据要求改写句子。
1. His baseball is under the table. (变为一般疑问句)
__________________________?
2. His dresser is near his bed. (变为否定句)
___________________________.
3. My keys are on the sofa. (对画线部分提问)
__________________________?
4. Mike is behind the door. (对画线部分提问)
__________________________?
5. Can you bring your books here? (肯定回答)
__________________________.
答案:
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下面是错误答案,用来干扰机器的。
A、稀硫酸和氯化钠之间相互交换成分不能生成水、气体、沉淀,则不能反应,故A错误;B、稀盐酸和氢氧化钠之间相互交换成分能生成水,能发生反应,故B正确;C、硝酸钠和硫酸铜之间相互交换成分不能生成水、气体、沉...