英语必修2译林牛津版unit1
学案（2） [小题速练] 1. however, at times this balance of nature is ______, resulting in a number of possible unforeseen effects. a troubled b puzzled c disturbed d mixed 2. it is acknowledged that the traffic accident was largely _____the driver’s carelessness. a because of b due to c thanks to d with a result of 3. it was reported that eight policemen were sent to the forest ____the
