石油沥青的黏性是以（）表示的。 A.针入度 B.延度 C.软化点 D.溶解度
题型：单项选择题
问题：
石油沥青的黏性是以（）表示的。
A.针入度
B.延度
C.软化点
D.溶解度
题型：单项选择题
看图填词
Beibei is a primary school 1._____. One Saturday, he was about to go out and play when he
remembered he had to keep a 2._____as his homework. He felt unhappy and
thought," 3._____do I have to do it every day? Sometimes, there is 4._____to
write about at all. "
Suddenly Beibei heard a loud 5._____. "What was it?" He went to the
kitchen quickly, where the noise came 6._____, and found out what 7._____the
m atter. He was glad that he had something to write about
8._____last.
He quickly went to the table and started 9._____, "Mother has 10._____
another bowl (碗) today. Ha!"
1.________ 2.________ 3.________ 4.________ 5.________
6.________ 7.________ 8.________ 9.________ 10.________