A：充分必要条件
B：充分不必要条件
C：必要不充分条件
D：既不充分又不必要条件
在新中国建立之初进行的抗美援朝和土地改革运动的共同作用是（ ）
读问句，选择对应的答句。
____①What's the weather like today? A. No, you can't.
____②Where are my books? B. Yes, it is.
____③What time is it? C. It's rainy.
____④Can I wear my new skirt? D. It's twelve o'clock.
____⑤Is it cool? E. They're on the bed.
在下面常用图例中，表示运河的是（ ）
