针对用单摆测重力加速度的实验,下面各种对实验误差的影响的说法中正确的是 ( ).
You should wash your hands before . A. eatingB. eats C. eat
I want to . A. strong B. be strongC. healthy
Fruit and vegetables are food. A. clean B. health C. healthy
看图选择则正确的翻译。
E. keep our body clean
There are many magicin this book. A. storyB. storys C. stories