与向量$\overrightarrow{a}$=（$\sqrt{3}$，1），$\overrightarrow{b}$=（1，$-\sqrt{3}$）的夹角相等且模为$\sqrt{2}$的向量为   （   ）

综合性学习。完成1-2题。

修改病句。

①今天我吃了米饭、苹果、蔬菜、水果。

②作为我们中学生，我们要遵守课堂纪律，认真听课。

我会拼(看拼音,写词语)。

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.