题干
He hurt her _________ badly _______ she had to see a doctor.
A：too, that
B：so , that
C：either, or
D：too, to
答案(点此获取答案解析）
B
A：too, that
B：so , that
C：either, or
D：too, to
染色体数目为62条。则母马与公驴杂交后代骡的体细胞中的染色体数组数和染色体数目分别是 
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