2．
Most students have biology classes in the classrooms or the labs in China．But several days ago，I had a biology class outside in my American schoo1．
My biology teacher，Mr．Kwak，divided us into three groups and asked us to play a game about natural selection（选择）and how birds find food．
He gave the first group one spoon per person，the second group forks and my group"knives．I thought we were going hunting，so knives might work better．Surprisingly，he told us to pick up the beans on the grass with our tools．
When the game started all of us ran to the grass area．We squatted（蹲）down and looked for beans．It was hard to pick up something that small，especially from the grass．
When I almost fired a bean，it dropped back to the ground．When I finally picked up several beans．one of my friends ran into me．I couldn't keep my balance and fell over．All my beans dropped to the ground!Just at that moment，Mr．Kwak called us back．I had to leave the game and of course I got a bad result．I couldn't help thinking that if I were a bird living on Galapagos Island，I would be dead soon．
The fun game made me realize that natural selection is redly competitive（竞争的）．Everyone is trying his or her best to-survive．
61．What did the writer's group use to pick up the beansC？
A．Spoons． B．Forks． C．Knives． D．Hands．
62．How many beans did the writer get at lastA？
A．None． B．One． C．Several． D．Many．
63．Which of the following is TRUEC？
A．The writer did a good job in the biology class．
B．The writer had a biology class outside their schoo1．
C．The writer found that picking up the beans from the grass was hard．
D．The writer didn't find enough food for the birds on Galapagos Island．
64．What's the meaning of the underlined word"survive''in the last paragraphB？
A．Find food． B．Remain alive． C．Be lovely． D．Keep balanced．
65．What was the aim of Mr．Kwak's classD？
A．To play an interesting game． B．To pick up the beans．
C．To know different kinds of birds． D．To learn natural selection．
