实验步骤:
①将玻璃板垂直于桌面放置;
②玻璃板的前面放置蜡烛A,点燃;
③在玻璃板的后面放置蜡烛B,前后移动B,使B与A的像完全重合,此时B的位置即为A的像的位置;
④标记下A的位置、和B的位置、玻璃板的位置;
⑤用刻度尺量出A与玻璃板的距离,B与玻璃板的距离,比较
妄____想(wǎnɡ wànɡ) 边防____ (fánɡ fǎnɡ)
根据句意及首字母或汉语提示完成单词
(1)Anna washes her f____ after she gets up in the morning.
(2) I like this book very much because it is very i____.
(3)There are sixty m____ in an hour.
(4)I go to the ____ (公园) with mum every evening.
(5)My father is very ____ (忙的) these days.