一个国家可以自由地修改宪法、变更政体、确定经济体制、缔造条约等，这是一个国家享有的（ ）
A．独立权
B．平等权
C．自卫权
D．管辖权
答案：A
Look and fill in the blanks. 看图，填空。
1. A: How is Peter?
B: He is metres tall.
2. A: is Mary?
B: She is metres tall.
3. A: Steven?
B: .
4. Miss Zhang is metres tall. Steven is metres tall.
She is and he is .
机体获得人工被动免疫的方式是
A．隐性感染B．疫苗接种C．显性感染D．注射抗毒素E．注射类毒素
