（1）How old was Mr.Smith when he became an engineer？
A.22 years old.
B.24 years old.
C.26 years old.
（2）What was Mr.Smith's first invention used for？
A.Washing the dishes.
B.Washing clothes.
C.Watering flowers.
（3）Where is Mr.Smith's farm？
A.In the east of America.
B.In the north of America.
C.In the south of America.
（4）What were grown on Mr.Smith's farm in 2012？
A.Carrots.
B.Cabbages.
C.26 years old.
（5）When were onions grown on Mr.Smith's farm？
A.In 2014.
B.In 2017.
C.In 2016.