Arlo is an eight-year-old boy from Shrewsbury, England. His grandpa died of cancer three years ago. To remember him, Arlo is running 100km this month to help people with cancer.

He runs with his mum in the morning. His dad and brother ride bikes with them. The weather is hot and he feels tired, but he keeps going. He has run more than 34km.

“My grandpa was very nice, kind and fun,” Arlo says. He wants to help others.

1.1. How old is Arlo?

A 8.

B 10.

C 12.

D 6.

解析：选A。A 细节理解题。根据第一段“Arlo is an eight-year-old boy”可知，Arlo八岁。故选A。

2.2. Why is Arlo running 100km this month?

A To win a race.

B To have fun with friends.

C To help sick people.

D To get more exercise.

解析：选C。C 细节理解题。根据第一段“To remember him, Arlo is running 100km this month to help people with cancer”可知，Arlo跑步是为了纪念爷爷（him指grandpa）和帮助生病的人。故选C。

3.3. What does the story tell us about Arlo?

A He is brave and kind.

B He is afraid of hot weather.

C He does not like running.

D He wants to stop running.

解析：选A。A 推理判断题。根据全文可知，Arlo在炎热天气中坚持跑100km纪念爷爷、帮助他人，说明他勇敢而善良。故选A。

4.4. What is the best title for the passage?

A A Hot Summer.

B My Happy Family.

C A Boy’s 100km Run.

D Running in the Morning.

解析：选C。C 主旨大意题。全文围绕Arlo为纪念爷爷而跑100km展开，故“A Boy’s 100km Run”最能概括主旨。A/B/D均为文中细节（天气、家人、跑步方式），以偏概全。故选C。