阅读下面短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。
B
A rich man was riding along the road and saw an old man digging in his garden．There was a young tree lying on the grounD． The rich man asked the old man．” what kind of tree are you planting there, my good man?”
“This is a fig（无花果）tree, sir．” He said． 
“A fig tree? the rich man was very surprised． ” Why, how old are you, may I ask?”
“I am ninety years old． ”
“What! “ shouted the rich man．“ You're ninety years old, You are planting a very young tree now and it'll take years to give fruit．You certainly don' t hope to live long enough to get any fruit from this tree．” The old man smiled and said, “Tell me, sir, did you eat figs when you were a boy?”
“Sure” the man did not know why he asked this question．
The old man asked, “who planted the fig trees?”
“ well, I don’t know．”
“You see, sir．” The old man said slowly, “our forefathers（祖先）planted trees for us to enjoy and I am doing the same for the people after me．”
The rich man was quiet, then said, “ you are right, my good man．We should do some things for the people after us．Thank you very much．” Then he rode away．
The old man was planting _________when the rich man saw him．

A．an apple tree

B．a fig tree

C．a pear tree

D．a banana tree

The old man was planting the tree____________．

A．to get himself some fruit to eat

B．for the people after him

C．to make his garden more beautiful

D．just for fun

The sentence in the, last paragraph “The rich man was quiet” means_________

A．he was thinking about who were his forefathers

B．he didn't want to disturb the old man

C．he couldn't communicate with the old man

D．he understood why the old man planted the young tree

What kind of personality does the old man has?

A．creative

B．brave

C．wise

D．curious

We can express the main idea of this passage”_________” in Chin ese．

A．前人栽树，后人乘凉

B．光阴似箭，一去不返

C．君子爱财，取之有道

D．财多惹祸，树大招风