As a small but national charity, we rely on charitable grants and individual donations to continue running theforum. Unlock l4 （第四级）：b2，对应 fce，对应 公立高中毕业时 水平； unlock l5 （第五级）：c1，对应 cae，对应 优秀高中毕业或大学生水平。 也就是说，这套书从孩子有一定英语基础开始，一直覆盖. We do not actively moderate, monitor or edit contributions but we may intervene and take any action as we think necessary.
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As a small but national charity, we rely on charitable grants and individual donations to continue running theforum.
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