国民经济五年计划是报刊上经常出现的一个词。我国第一个五年计划的基本任务是（）

A.实行土地改革

B.集中力量发展重工业

C.实现国家工业化

D.进行三大改造

Speaker A: It’s good to see the sun again.
Speaker B: ().

A. Haven’t you seen the sun for a long time

B. But I sometimes think the moon is very beautiful, especially in Mid-Autumn Festival.

C. I don’t thinks so. It’s so hot under the sun.

D. A big improvement on what we’ve been having.