We stayed at home ________ the rain .
| A．because of | B．because | C．as | D．since |
99. A 100% ______ dress can keep people refreshed in summer and warm in winter.
| A．cotton | B．nylon | C．dacron | D．chemical fibre |
100. In the battle we fought to the death in defense of our positions and paid a heavy _____ for last victory.
A. cost B. price C. value D1. Pay
101. In the _____ of my long life I’ve known many changes which took place in this village.
| A．course | B．cause | C．way | D．day |
102. Some people say that smoking is a bad _____.
| A．custom | B．habit | C．manner | D．Tradition |
103. The activity is called "saving the earth" which refers to more reduction of ____ caused to the world by freon (氟里昂)of refrigerators.
| A．hurt | B．harm | C．destroy | D．Damage |