气溶胶包括（）
A.粉尘、雾和烟
B.气体、烟和蒸气
C.气体、粉尘和烟
D.气体、蒸气和雾
E.蒸气、粉尘和烟
参考答案：A
观察图画，看看句子的意思是否符合图意，相符的画“√”，不符的画“×”。
1. 2. 3. 4. 5.
( ) 1. The is behind the closet.
( ) 2. The is on the bed.
( ) 3. The is in front of the picture.
( ) 4. The is in the living room.
( ) 5. The is in the kitchen.
2.
3.
4.
5.
is behind the closet.
is on the bed.
is in front of the picture.
is in the living room.
is in the kitchen.