问题
不定项选择
不定项选择 |
在实验过程中,对于减小实验误差有益的是( ) |
A.选取记数点,把每打5个点的时间间隔作为一个时间单位 B.使小车运动的加速度尽量小些 C.舍去纸带上密集的点,只利用点迹清晰、点间间隔适当的那一部分进行测量、计算 D.选用各处平整程度、光滑程度相同的长木板做实验 |
答案
ACD
不定项选择 |
在实验过程中,对于减小实验误差有益的是( ) |
A.选取记数点,把每打5个点的时间间隔作为一个时间单位 B.使小车运动的加速度尽量小些 C.舍去纸带上密集的点,只利用点迹清晰、点间间隔适当的那一部分进行测量、计算 D.选用各处平整程度、光滑程度相同的长木板做实验 |
ACD
Read and answer. (找答语,将右栏答语前的序号填在前面的括号内。) | |
( )How many kites can you see? ( )Where are you from? ( )Do you like peaches? ( )How many books do you have? ( )Can I use your pen? ( )Look at the deer. ( )Where is my pencil? ( )Let's have some pears. ( )Who's that boy? ( )Happy Women's Day! | 1. It's in your bag. 2. I have twelve. 3. OK! 4. I'm from China. 5. It's short. 6. Thank you. 7. No problem. 8. No , I don't. 9. I can see eleven. 10. He's my brother. |