阅读短文，掌握其大意，然后从每小题所给的四个选项中选出一个最佳答案。
Eric is 13 years old. He likes animals.
Tony is Eric's 1. He is only 6 years old. He likes animals,
2.
One day, Tony says to Eric, "How about
3 to the zoo this Sunday?"
Eric thinks it is a good idea. But the zoo is 4 from their home. He asks their father to drive
them there, but their father has no time because he has to work on weekends.
Eric thinks he can.5 a
bike to the zoo,6 Tony can', because he is too 7 Then Eric asks their mother to take them
there.
Their mother says," OK. Let's go to
the zoo by 8".
This 9 morning, they take the bus there. At the zoo,
they see many animals. Elephants are Eric's favorite because he likes big
animals. Tony 10 likes pandas, so he watches them fora long
time. Tony and Eric ask," Mom, 11 are your favorite animals?" Their mother says,"
All the animals are my favorite. But now people 12 many trees, animals are losing13 homes, some animals are in danger, so we14 save them, because animals are our
friends."
15 4:00 pm, they finish their visit. When they
are on the bus back home, they are all very happy.
