C．They are contradictory. D．They are convincing.

4．What can be inferred about recognitive abilities in animals?

A．They develop only with age.

B．It is unclear how they've evolved now.

C．No animals but crows benefit from them.

D．Planning for the future helps their evolution.

Ⅱ.完形填空

(2017·江西九江十校联考)

　　The snow is gone and green grass can be seen growing close to the sunny side of homes.The birds in the backyard are singing in the bush.Spring is here，and with 5 come memories of the smell of 6 ，new sneakers，and longer days.

　　As a kid，I knew spring arrived when I walked into the house after school and 7 paint.The first warm day would cause my mum to have the idea of 8 .She opened the windows，let the fresh air in，opened a can of paint，and put a fresh 9 on the walls of a room.

　　Spring was also the time to change 10 .In Nova Scotia，we had snow on the ground almost 11 from late December until late March.We spent all of our time outside wearing our 12 winter boots.To run in them was like running with two weighty bags.

　　In late April or early May，mum would take us to the town to buy a new pair of light 13 for each of us.I still remember the rubber 14 ，with the trademark imprinted on it.After a month or two，small hands would tear it off，and leave a circle，darker than the 15 material around it.

　　Later，when we returned home，my brothers and I 16 our new sneakers.The door shut 17 behind us when we rushed out，causing a shout of 18 from our dad.Then we ran across the fields.The weight of the heavy winter boots was 19 .It felt like we were 20 through the air or we could jump thirty feet like a kangaroo.The thoughts of summer's approach and the 21 wind of spring rushing past our uncovered ears were 22 .

　　When life gets me down and when everything seems 23 ，I don't let it 24 me.I would let my room put on a new coat of paint，pull on a new pair of sneakers，and just run like it was spring.

5．A.autumn B．spring

C．winter D．summer

6．A.flowers B．food

C．wine D．paint

7．A.smelled B．bought

C．made D．matched