阅读理解，根据短文选择正确答案 It was Saturday yesterday. It rained. We were at home. My mother phoned grandma. The_刷题宝

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阅读理解，根据短文选择正确答案

It was Saturday yesterday. It rained. We were at home. My mother phoned grandma. Then she washed clothes. My father cooked some noodles and vegetables for lunch. My brother Sam didn't help him. He watched TV. But I helped Dad. I think it will be sunny tomorrow. We will have a picnic in a park. And we will be very happy.

上一题下一题 0.0难度选择题更新时间:2017-07-09 12:15:11

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甲、乙两辆汽车在平直公路上匀速行驶相同的时间，此时它们的速度之比是5：4，发动机的功率之比是3：2，则发动机的牵引力之比是（　　）

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⑤HClO的酸性比H₂SO₄强

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