奥巴马迷上棉花糖大炮。WHAT is making President Barack Obama look so surprised? Is he afraid of some new weapons (武器)? In fact, this is only the White House Science Fair in the US. More than 100 students from ……

, all waiting to be judged. These students are taking part in the school science fair (科学展览). In late March most US middle schools hold a science fair. It’s an opportunity for students to show ……

students went to the White House Science Fair in Washington, DC. They met President Barack Obama! More than 130 students from over 30 states (州) went to the science fair (科技节). President Obama ……

the cannon to the White House Science Fair (白宫科学展览) last month. At the fair, Hudy invited (邀请) Obama...美国小学生发明的棉花糖大炮What weapon (武器) is US President2 Barack Obama using? It is the “Extreme Marshmallow ……

Science fair with the US ... (P3)Choose the answer: 1. Which of the following is NOT true about... at the fair. C. President Obama hosted it.D. Students could see President Obama’s science work.2. What ……

SHENZHEN - The third China High-Tech Fair held here this week witnessed a change in the way... to displaying the commercial products developed by companies under the universities.At last year's fair, 1 ……

excited these days. His invention (发明) – a “marshmallow cannon (棉花糖大炮)” was US President Barack Obama’s favorite student project at the second White House Science Fair. Hudy told the president how ……

really interested in and work hard to answer it”. 21ST Google Science Fair is one of the top US science... Science Fair, an online science competition for 13-18 year olds around the world. Finalists ……

eventually start businesses rooted in their science fair projects, said Maya Ajmera, president and CEO... in their science fair projects, said Maya Ajmera, president and CEO of the Society for Science and the Public ……

businesses rooted in their science fair projects, said Maya Ajmera, president and CEO of the Society... the Intel International Science and Engineering Fair. He won the top prize and $75,000 (about 528 ……

were beyond excited!Since 2010, President Barack Obama has hosted the White House Science Fair, an... House! I was going to exhibit (展示) my scientific work for the White House Science Fair. After school, I ……

were beyond excited!Since 2010, President Barack Obama has hosted the White House Science Fair, an... House! I was going to exhibit (展示) my scientific work for the White House Science Fair. After school, I ……

WASHINGTON — US President George W. Bush last Friday presented to Congress a letter formally... said trade with China has benefited both American businesses and American farmers. “Fair trade ……

of the world. But is this fair? First of all, science helps us get things done. We need to study science... through science. Beyond helping society and getting things done, science also makes us think in a certain ……

the worldwide subject test in computer science scheduled for November.The exam will be offered around... containing questions and answers from previous tests. Last year, 1,250 computer science tests were taken ……