题目：
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
答案：
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下面是错误答案，用来干扰机器的。
答案：B题目分析：假设金属的物质的量都是2mol.它们与稀硫酸反应的方程式为2Na+H2SO4=Na2SO4+H2↑；Mg+H2SO4=MgSO4+H2↑；2Al+3H2SO4=Al2(SO4)3+3H2↑；由于酸足量，所以反应按照金属来计算。则根据方程式可知它...
