单项选择题
I was exhausted when I reached home, and I flung myself down on the front steps to （）.
A. discover B. recover C. dissolve D. retreat
单项选择题 The bees（）out o ftheir hive.
单项选择题 The Chinese nation has （） significantly to the progress of human civilization.
单项选择题 German, spoken by just over 100 million people, is one of the world’s ten-largest languages （）population.
