考博考试

试题来源：考博英语-24
【单选题】 Which of the following is NOT true
A．After injection, the embryo gets a copy of the new gene as it divides.
B．The injection method is less good because the new gene sometimes fails to join the embryo's genes.
C．The retrovirus multiplies after it enters the cell.
D．The incorporating method is less simple but better.

参考答案：C
网考网解析：
根据“An alternative technique is．．．retrovirus that has been modified so it ca... 查看试题解析出处>>