写出26个英文字母（大小写）并写出元音字母。

1. 26个字母。
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2. 元音字母有: _______________________________________________________________________

1. Aa, Bb, Cc, Dd, Ee, Ff, Gg, Hh, Ii, Jj, Kk, Ll, Mm, Nn, Oo, Pp, Qq, Rr, Ss, Tt, Uu, Vv, Ww, Xx, Yy, Zz
2. Aa, Ee, Ii, Oo, Uu