QUIZ TIME
Day 2 Why people see double (P5)
Choose the best answer:
1. Which of the following would Michael Sheehan probably agree with?
A. There is too much genetic diversity to study.
B. There are only dozens of genes that shape our faces.
- 对本期电子报订户、有效期内的VIP教师会员和本学期高一尊享卡用户，我们开放所有内容：
- 如果您拥有以上权限，请点这里登录；
- 订阅电子报，请点这里；
- 激活VIP教师卡，请点这里；
- 激活21英语尊享卡，请点这里。
