问题
选择题
下列物理量中,属于标量的是 [ ]
A.速度
B.时间
C.位移
D.力
答案
答案:B
下列物理量中,属于标量的是 [ ]
A.速度
B.时间
C.位移
D.力
答案:B
词形变换:选择方框里的词的正确形式填空,每词只用一次。 | |
2. Do you know who ________ America? 3. They will show us a ________ experiment in class. 4. I have nothing ________ to my letter. 5. Air is ________ than we think. 6. The force is strong enough ________ the water. 7. I will ask the class to make ________ and guess what will happen. 8. An Easter egg hunt is a game for ________ eggs. 9. To make a candle ________, you "light" it. 10. When the candle stops burning, it ________ up all the oxygen in the air. |