关于麻醉选择的决定因素，下面哪项是错误的（）。
A.手术病种、方法和长短
B.性别
C.年龄
D.客观条件
E.麻醉者的经验
参考答案：B
单词拼写。
1. They have a school t__________ every year.
2. August is the e__________ month of the year.
3. F__________ is the second month of the year.
4. —What's the d__________ today? —It's March 2nd.
5. S__________ 10th is Teachers' Day.
根据《合同法》，下列合同中不属于无效的是( )。
A．附条件的合同
B．损害社会公共利益的合同
C．恶意串通，损害第三人利益的合同
D．以合法形式掩盖非法目的的合同
