问题
选择题
人的体细胞中有23对染色体，卵细胞和受精卵中的染色体数目分别是[ ]
A．23条、23对
B．23对、23对
C．23条、23条
D．23对、23条
答案
答案：A
搜题请搜索小程序“爱下问搜题”
人的体细胞中有23对染色体，卵细胞和受精卵中的染色体数目分别是[ ]
A．23条、23对
B．23对、23对
C．23条、23条
D．23对、23条
答案：A
Passage Two
Which of the following factors did NOT contribute to the sea disaster
A．Andrea Doria was not very far from other ships.
B．It was dark and foggy.
C．Andrea Doria was going at a fast speed.
D．Andrea Doria’s killer had an ice-breaker like bow.