下列哪些方法可治疗恶性肿瘤（）
A.手术治疗
B.放射治疗
C.化学治疗
D.免疫治疗
E.基因治疗
参考答案：A, B, C, D, E
什么是汽轮机的情走时间？情走时间长短说明什么问题？
根据答句写问句。
1. ____________________________________?
My birthday is in February.
2. ____________________________________?
Because I can swim in the lake.
3. ____________________________________?
I do morning exercises at 8: 30.
4. ____________________________________?
Children's Day is in June.
5. ____________________________________?
Fall is my favourite season.
6. ____________________________________?
No, I don't like summer.
