管井的井径是指井管的内径,用符号“D”表示,单位是毫米。
参考答案:对
句型转换。
1. He often helps me with my English. (改为同义句)
He often helps me _______ _______ English.
2. Where are you from? (改为同义句)
Where _______ you _______ from?
3. The girl has to read English every day. (对画线部分提问)
_______ does the girl _______ to do every day?
4. You can run in the hallways. (用outside改为选择疑问句)
_______ you run in the hallways _______ outside?
5. Mary gets up at six o'clock every morning. (改为否定句)
Mary _______ _______ up at six o'clock every morning.
在党的领导下,我国人民经历了站起来——富起来——逐步强起来的发展历程。改革开放以来,我国实现由“富起来”到“逐步强起来”的根本原因是( )
A.始终坚持党的基本路线不动摇
B.始终坚持党的正确领导
C.始终坚持以经济建设为中心
D.开辟了中国特色社会主义道路,形成了中国特色社会主义理论体系