南宗画派的风格有()。
A.阳刚
B.秀逸
C.阴柔
D.劲道
参考答案:B, C
-Has Sam finished his homework today, Anne?
-I have no idea. But he ________ it this morning.[ ]
A.did
B.had done
C.was doing
D.had done
雷诺数越大,流体的湍流程度(),流体流动时的摩擦阻力()。
A、越大、越小
B、越小、越小
C、越大、越大
D、越小、越大