下列不属于自强的人的表现是（    ）

In North China, the weather in ____ (十一月) could be very cold.

①立即防止使用煤、石油、天然气等燃料

②积极开发使用新能源

③植树造林，保护好现有的原始森林

④扩大海洋面积，调节气温

补全对话

从方框中选择最佳选项完成对话, 有两项多余。

a. How are you?

b. What did you do in the camp?

c. Did you go there alone?

d. Can you play the violin now?

e. Where did you go on holiday?

f. Were there many students in the camp?

g. How long did you stay there?

M: Hey, Maria.____ 

W: I went to a music camp in Switzerland.

M: That sounds interesting.____ 

W: For ten days.

M: ____ 

W: We learned to play the piano, the guitar and the violin.

M:____ 

W: No. But I can play the guitar a little.

M:____ 

W: Yes, there were so many students. And they came from different cities.