2009年10月，国防科技大学研制的“天河一号”超级计算机，使我国成为继美国之后世界上第二个能够研制千万亿次超级计算机的国家，这一成果必定推动我国科技自主创新和经济的发展。这表明（ ）
①科学技术是第一生产力
②科技创新只表现在超级计算机领域
③科学技术成为推动生产力发展的决定性因素
④我国的科技实力从总体上看同发达国家相比已经没有差距
| A．①② | B．①③ | C．②④ | D．③④ |
He arrived early,____ to have a look at his favourite pop star.
| A．hoping | B．to hope | C．having hoped | D．hoped |
The boy was late. He tried to enter the classroom without being noticed by the teacher, but luck ______ him.
| A．went with | B．went against | C．went along | D．went over |
_______ I have to sell my house, I’ll keep my business going.
| A．Even | B．As if | C．If | D．Even if |
Here are five nice pairs of shoes, I think, to __. Which would you like to ___?
| A．choose, choose | B．be chosen, choose |
| C．choose from, choose | D．choose, choose from |
We are paid _____ how much work we do.
| A．by | B．according to | C．because of | D．with |