8＋10＝　　____

3＋10＝____

14－4＝____

14＋2＝　____

16－4＝　____

6＋13＝____

有了科学的农业生产方法，他们的土地产量更高。

____ scientific farming methods, they have been able to use less farmland to produce more. (用equip短语表达) 

读图回答

由此判断亚洲地势（ ）

M: Are you free o____ Sunday/

W: No, I'm very b____. At 8:30 I have a music lesson. Then at 10:00 I have English. It is useful (有用的)but it is d____ for me.

M: Well, what time do you have l____.

W: At 12：00.

M: What lessons do you have in the a____.

W: I have a Chinese lesson and an A____ lesson.

M: W____ is your Chinese teacher?

W: Ms. Yang.

M: And what time do your lessons finish?

W: At h____ past four.

M: What do you do in the evening?

W: I l____ to music. What about you?

M: I usually watch TV after d____.

①该电池工作时，c口通入的物质为____．

②写出该电池的电极反应式：正极：____

负极：____．