当护栏一侧距楼地面高度为5m及以上时，护栏玻璃应使用不小于12mm厚的钢化夹层玻璃。（）
参考答案：对
选出对句子划线部分结构描述正确的选项。
1. It is by the composer Johann Strauss.
A. 主语
B. 谓语
C. 宾语
D. 表语
2. He wants to learn to play techno and be a musician.
3. You don't need to play a musical instrument to be a musician.
A. 状语
4. His Waltzes made him famous all over Europe.
B. 补语
D. 表语
5. There were two composers called Johann Strauss.
A. 定语
6. I'm the only one who doesn't like techno.
B. 定语
真骨鱼的鳍条有哪几种？
