阿富汗、巴基斯坦、()、美国关于阿富汗问题的四方机制第三轮对话2月6日在巴基斯坦首都伊斯兰堡举行。
A.德国
B.俄罗斯
C.中国
D.日本
参考答案:C
Talking about his success, the famous scientist said, “I’ve been lucky _________there are many people
who have helped me”.[ ]
A. except that
B. now that
C. so that
D. in that
一质量为100克的物体,放入装满水的杯子中,溢出了40克水,求:
(1)该物体所受的浮力;
(2)该物体的密度是多少?