试回答下列问题：

中国载人航天工程办公室主任王兆耀说，按照计划，将于2016年9月15日发射天宫二号空间实验室，并在随后发射神舟十一号飞船和天舟一号货运飞船与之对接；2018年前后发射试验核心舱，进行空间站建造技术的试验和验证，随后于2022年前后完成空间站在轨建造。有关专家告诉记者，中国目前完全具备发射、测控火星探测器，把探测器送到火星轨道的技术和能力。这说明改革开放以来的中国（    ）

①综合国力逐步增强                               ②国际地位日益提高

③科学技术已经达到世界先进水平       ④体育水平达到了世界一流

阅读理解。

    Aunt Judy's birthday is coming. She will be 38 years old. Dad and Mum are going to take me to her house. She lives in Guangzhou. We are going to go there by train. Her birthday party will be on Saturday. We are leaving on Friday afternoon. And we are coming back on Sunday evening. I am going to give my dear Aunt Judy a picture . I am drawing it now. I am drawing some beautiful flowers. I am drawing a small dog, too. That's because she likes dogs. The picture will be very nice.

将8.1g氧化锌固体放入100g稀硫酸中，恰好完全反应．试计算：

①可生成硫酸锌多少克？

②所用稀硫酸的溶质质量分数是多少？

（化学方程式：ZnO+H₂SO₄=ZnSO₄+H₂O）