Make sure the game is worth the candle.
That is a step in the right direction， but I don't believe it is enough.
You take the easy obstacles first and by a process of elimination you eventually arrive at the one or two major ones.
But in selecting the problem， you need to be sure to analyze it carefully to see that it is worth the effort.
Research isn't a physical thing at all； it's a state of mind.
By contrast， all research work is 99. 9 per cent failure and， if we succeed once， we are in.
第1题：
What is the main idea of the man's speech?
A．Everything at State University has changed in the past ten years.
B．Although the campus looks the same, some things have changed at State University.
C．In spite of the changes on the campus, the commitments of the State University remain the same.
D．Everything has stayed the same at State University during the past ten years.
第2题：
His sister ______her hometown for three years. She'll return next year.
A. left
B. has left
C. has been away
D. has been away from
14．答案为D 他的姐姐已经离开家乡三年了。她明年将要回来。该句表示到现在为止一直发生的动作，因此要用现在完成式，away表示离开某地时应加from。
第3题：
A.has been done
B.has done
C.did
D.was done
第4题：
A.A
B.B
C.C
D.D
第5题：
A.has been done
B.was done
C.have been done
D.were done
答案：A
第6题：
For many years, people electric cars. However, making them has been more difficult than predicted.
A．had dreamed of
B．have dreamed of
C．dreamed of
D．dream of
第7题：
Age is not the learner factor that has been an issue in second language acquisition research.()
第8题：
Helen loves to talk about travel. She _____ many places.
A. has gone to B. has been to C. has gone for D. has been from
第9题：
参考答案：awareness
第10题：