下列离子反应方程式中，正确的是(   )

A．铁与稀硫酸反应 Fe+2H⁺====Fe³⁺+H₂↑

B．二氧化碳与水反应 CO₂+H₂O====2H⁺+CO₃^2－

C．碳酸钡与盐酸反应 CO₃^2—+2H⁺====H₂O+CO₂↑+Ba²⁺

D．氢氧化钠溶液与硫酸铜溶液反应 2OH^—+Cu²⁺====Cu(OH)₂↓

根据句意选择与句中画线部分意思相同或相近且能代替的选项。

1.—What are you doing now?

   —I'm babysitting my sister.     

A. looking after    

B. playing with    

C. looking at    

D. looking for

2. I'm visiting my grandparents in the countryside. 

A. gomg to see    

B. seeing    

C. sightseeing    

D. meeting

3. Well, enjoy yourself in your Vacation.     

A. have a rest        

B. have a good meal

C. have a hard time    

D. have a good time

4. What's the weather like in Italy?    

A.What's the weather            

B. How is the weather

C. What do vou think the weather    

D. How does the weather

5. What about going to the movies?      

A. Let's        

B. Would like

C. How about   

D. Shall we