魏晋时期内迁的北方少数民族有匈奴、鲜卑、羯、犬戎和羌等族。（ ）
如图，用12块相同的小长方形瓷砖拼成一个大的长方形，则每个小长方形瓷砖的面积是（ ）
The company always________great importance to the quality of their products. That's why there is always steady increase in sales year by year.
big the house is!
