明白了。美国大学的这种设置就是给高中生科普一下，提升兴趣。没有太高要求。感谢分享

来源: 香草仙子于 2025-04-22 14:13:07 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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