轻型排水塑料管使用压力小于或等于()MPa,重型管使用压力小于或等于()MPa。
A.0.6,0.8
B.0.8,0.6
C.0.8,1.0
D.0.6,1.0
参考答案:D
根据句意,用适当的单词填空。
1. —_______ you have a basketball? —Yes, I _______.
2. —Does Gina _______ a math book? —No, he _______.
3. —_______ Chi-Young have a tennis racket? —Yes, _______ does.
4. _______ play volleyball.
5. My brother _______ have a notebook.
6. She _______ sports every day.
7. That sounds _______.
8. My sister _______ five baseballs.
9. —Do you have _______ ball? —No, we _______.
10. I don't like math. It's _______.
20世纪30年代中期,中国大学生传唱着许多歌曲。这些歌曲有一个共同的主题是。[ ]
A.歌颂祖国
B.追求理想
C.抨击时弊
D.抗日救亡