2、下列物质属于纯净物的是

A、洗衣粉        B、水          C、豆浆      D、石油

1、  下列变化属于化学变化的是

A、白磷自燃                      B、空气液化    

C、干冰升华                      D、玻璃破碎

    90. The mother was great/brave.

       The mother loved her son very much.

十一、The students of C,  lass 2,  Grade 3 went hiking for a field trip. On the way home,  Xiao hua found a little bird under a tree. There was something wrong with its wing. /      Something was wrong with its wing. It couldn't fly. Xiao hua brought it home and took good care of it/looked after it well. Now the bird is better. Xiaohua is going to let it(fly) back to the blue sky because the blue sky is the bird's real home( because the blue sky is the real home of the bird).

    89. Lisa decided/made up her mind to save her son(from the snake's mouth)

    88. The fearless mother's love made her forget the danger.

    87. The story happened at Lisa's/the backyard.

十、86. He was three/three years old.

   85. fall asleep/go to sleep

   83. lose heart  84. No matter what/Whatever

 九、81. put on  82. was interested in/had interest in