中医药大学作业英语2-2正确答案

1. When payments are made every week the usual word is ______ A.salary B.pay C.**wage D.income 2. New ______ of petroleum and natural gas were found in 1978. A**.source B.origin C.information D.material 3. You had better have more ______ of catching the train if you got a bus to the station instead of walking. A**.chance B.lift C.offer D.luck 4. The swimmer failed _____ the shore. A.reaching B.having reached C**.to reach D.to be reached 5. I was _______ discouraged by this failure ______