A B C
B
On a cold winter afternoon, I was walking home fro
I suddenly felt sad. I knew this man would take al
A big smile appeared on his face and I felt very h
Just then, I understood what the saying “Giving is
Giving sometimes doesn't cost much, but it means a
56. The writer felt a little tired because ______.
C
DNA is the whole “map” of the human body. It is so
People have been trying to understand the human bo
In 1961, another two scientists found the first “w
Most people hope that this will help to make bette
D
Even in early times, people could realize the impo
Children do not have much experience or knowledge.
Teenagers and young people should also be encourag
Older people should believe that it is never
To dream is a wonderful ability which can lead to
E
As we all know, reading plays an important role