Concerns arise over sperm donors

 　　Beijing, Sept. 6 (Xinhua) -- A sperm¹ donation scandal disclosed recently has aroused growing concern in the United States.

　　According to the New York Times' report, Ryan Kramer, the son of a donor², found that he has more than 150 half-siblings - they are all the children of the same donor.

　　"It's wild when we see them all together - they all look alike," said Cynthia Daily, mother of Kramer.

　　As more women choose to have children on their own, the demand for sperm donors³ has surged.

　　Some sperm banks are earning huge profits by allowing too many mothers to receive sperms⁴ from the same popular donors, according to the report.

　　And this trend will lead to risks: rare genetic⁵ diseases could be spread more widely, and the children of the same donor could meet and, unbeknownst to them, commit incest, medical experts warned.

　　Parents and donors are calling for a tighter regulation so that donor children can know more about their donors, and the number of kids from each donor can be limited.

1 sperm   

n.精子，精液

参考例句：

• Only one sperm fertilises an egg.只有一个精子使卵子受精。
• In human reproduction,one female egg is usually fertilized by one sperm.在人体生殖过程中，一个精子使一个卵子受精。

2 donor   

n.捐献者；赠送人；(组织、器官等的)供体

参考例句：

• In these cases,the recipient usually takes care of the donor afterwards.在这类情况下，接受捐献者以后通常会照顾捐赠者。
• The Doctor transplanted the donor's heart to Mike's chest cavity.医生将捐赠者的心脏移植进麦克的胸腔。

3 donors   

n.捐赠者( donor的名词复数 )；献血者；捐血者；器官捐献者

参考例句：

• Please email us to be removed from our active list of blood donors. 假如你想把自己的名字从献血联系人名单中删去，请给我们发电子邮件。
• About half this amount comes from individual donors and bequests. 这笔钱大约有一半来自个人捐赠及遗赠。 来自《简明英汉词典》

4 sperms   

精子( sperm的名词复数 )

参考例句：

• Sperms fertilize ova in the fallopian tube. 在输卵管内精子使卵受精。
• The gender is determined by the father's sperms not by the mother. 性别是由爸爸的精子决定的而不是妈妈。

5 genetic   

adj.遗传的，遗传学的

参考例句：

• It's very difficult to treat genetic diseases.遗传性疾病治疗起来很困难。
• Each daughter cell can receive a full complement of the genetic information.每个子细胞可以收到遗传信息的一个完全补偿物。