石料和瓷砖面层的质量通病常见的有()
A.空鼓
B.接缝不平
C.遇水膨胀
D.色差
参考答案:A, B, D
He was an _____ poet at that time and his _____ poems spread through all the country.
A.inspired; inspired
B.inspiring; inspired
C.inspired; inspiring
D.inspiring; inspiring
一个袋子装有红、黄、白三种颜色的球各10个。至少要摸出( )个球才能保证有4个球的颜色相同。