the topic of my speech is budgeting for life, get ready from this moment from this penny. some day i went shopping with my roommates, after leaving the check-out counter, i picked one item from a
October 26, 2007 THE PRESIDENT: Good morning. I went out to California yesterday to meet with families affected by the wildfires, and to thank the state and local officials for their outstanding work
This ability to make copies of DNA, as simple as it sounds, has transformed our world. DNA的这种复制能力听起来很简单，却改变了我们的世界。 Scientists use it every day to detect and address disease, to create innovative medic
