连接管路时应注意将油管（）（不扭动）排列整齐。
A、摆放通顺
B、随便摆放
C、交叉摆放
D、拉紧
参考答案：A
Mr Jackson was very angry to find the car he had had _____ yesterday broke down again.
A．to repair
B．it repaired
C．repairing
D．repaired
What lessons China can draw from ____global financial crisis has become____hot topic among us students.
A．the;a
B．/;a
C．a;the
D．/;the
