(2013·安徽,21)From space, the earth looks blue. This is ________ about seventyone percent of its surface is covered by water.
, most teenagers now listen to rock music. However, Rose likes classical music.
In his spare time, he often listens to music or watches TV to himself.
—Mary is very clear and studies very hard. —she stands out in almost all her subjects that she learns.
To the surprise of many people, in ten years the city’s population by 12%.
Obviously, the book is for children aged between three and six.