to control pests所叙述的这件事，第三段正是因为这件事，才带来了该地区经销商的销量大增。故选C。

4．The drinks can kill pests because ________.

A．there is some pesticide left in them

B．they are sticky and fizzy

C．they have elements that kill pests

D．they made the pesticide more effective

【答案】　D　推理判断题。根据文章第二段的He said the drinks had all the elements they needed：they were cheaper，sticky，fizzy，and attracted ants，which ate the young of the pests推断可乐可帮助杀虫剂更有效。故选D。

Ⅱ.完形填空

(2019·福建省普通高中毕业班质检)Shortly after I started out as a professional baseball player in the Tri－State League，I was fired."Frank，"the manager said __1__，"whatever you do after you leave here，put some __2__ and enthusiasm into your work！"Well，that was the __3__ thing I expected him to say.

A week later，__4__，I was introduced to the New Havern.My first day here will always __5__ in my memory as a great event in my life.No one knew me in the league，so I was __6__ to make myself the most enthusiastic ball player they'd ever seen.From the minute I __7__ on the field，I acted like a man electrified.And I acted as if I were alive with a million __8__.

My biggest thrill came the following morning __9__ I read in the New Haven newspaper："This __10__ player，Frank，has a barrel(桶)of enthusiasm.He __11__ our boys.They looked better than at any time this season."The newspapers began __12__ me the life of the team.

Within two weeks，enthusiasm took me from $250 a month to $1850 a month－it __13__ my income by 700 percent！Two years after that，I was __14__ third base for the St.Louis and multiplied my income by thirty times.Enthusiasm __15__ did it；nothing but enthusiasm.