阅读短文，根据短文内容，从短文后的五个选项中选出能填入空白处 的最佳选项。选项中有一项为多余选项。

Kenny and Bobbi McCaughey live in Iowa. They have a big family. Mikayla is the oldest child in the family. She is six years old. The other children are Brandon, Joe, Kelsey, Kenney, Natalie, Alexis and Nathan. They are all five years old. Why are they all the same age? ______ (1). They are septuplets!

It is hard work to look after seven babies at the same time. ______ (2). In the beginning, many people helped them. They helped to feed, clean, and dress the babies. Every week , the septuplets used about 170 diapers(尿布)!______ (3).

Now the children are older. The septuplets started school this year. But they go to school at home, like their big sister, Mikayla. When Mikayla was ready for school, Kenny and Bobbi decided to teach her at home.______ (4).Now Bobbi is the teacher for all eight of her children.

A.     They drank a lot of milk, too.

B.      Because they were born together.

C.      Last year, Bobbi was Mikayla’s teacher.

D.     Kenny and Bobbi are interested in cooking.

E.      But Kenny and Bobbi didn’t look after them alone.

1. 答案：B.

【解析】我们发现有关键词"Born"与age、five years old相呼应。再看空格的前两句内容提到They are all five years old. Why are they all the same age? 结合常理我们能够得到他们应该是同时出生的。分析五个选项，排除不符合前后文意思内容的选项。再通过后文说They are septuplets!(七胞胎)第二个选项明显符合先后文的因果关系，故选B。

2. 答案:E.

【解析】先看单词，look after复现。看空的前后，前文说同时照顾七个宝宝是个艰辛的工作，后文说起初有很多人帮助他们。前后逻辑是相反的，所以中间应该有转折。再看选项，把各个选项实在带入只有E符合前后行文顺序其它的内容均与该空无关，故选E。

3. 答案：A.

【解析】首先注意关键词they 的指代，前文说到他们每天需要大量的尿布，而把所有选项带入后发现只有A选项与原文空格位置逻辑顺序相符。故选A。其他选项与前文所描述内容不能有效联系，所以不选。

4. 答案：C.

【解析】关键词复现：Bobbi和关键词替换原文中的teach与选项中的teacher,从逻辑看，带入C，去年Bobbi 是Mikayla的老师，与下文现在她是所有孩子的老师成顺承关系。同时注意空格后一句的内容。把选项C带入前后文所描述的内容一致。故选C。其它选项与本题前后内容描述不一致逻辑不一致，故不选。