5. The X _______ is present in two copies in females and a single copy in males.
(A) hormone
(B) chromosome
(C) astrodome
(D) gastronome

答案：登入後查看
統計： A(28), B(112), C(10), D(22), E(0) #800563

詳解 (共 3 筆)

#1044998
Astrodome 天體觀察室
4
0
#1038919
gastronome (n.) 美食家、講究飲食的人。
4
0
#1074625
chromosome 染色體
3
0