Clouds are white. The trees are green. The flowers are yellow. The big lake is blue. There is a purple bike under a tree. Some children are rowing a boat on the lake.

1.What color are the trees?

A White.

B Green.

C Yellow.

D

解析：选B。B 细节理解题。根据The trees are green.可知树是绿色的，故选B。

2.Whose color is blue?

A The clouds.

B The flowers.

C The big lake.

D

解析：选C。C 细节理解题。根据The big lake is blue.可知大湖是蓝色的，故选C。

3.There is a________ under a tree.

A blue bike

B purple bike

C yellow bike

D

解析：选B。B 细节理解题。根据There is a purple bike under a tree.可知树下有辆紫色自行车，故选B。

4.What are the children doing?

A Fishing.

B Swimming.

C Rowing a boat.

D

解析：选C。C 细节理解题。根据Some children are rowing a boat on the lake.可知一些孩子正在湖上划船，故选C。