我国测量坐标系统通常有三种,即()、()、()。
参考答案:大地坐标系统、 高斯3º 平面直角坐标系统 、平面直角坐标系统
根据句意,用括号内所给单词的适当形式填空。
1. I like P.E. best. Because my P.E. teacher is very _______ (friend) to us.
2. —Where is your bedroom? —It's on the ________ (three) floor.
3. —Thank you for your help. —It's my _______ (please).
4. All the books are on these _______ (shelf). You may go to find the book you want to borrow.
5. Kangkang likes _______ (dance) at the party, because it's interesting.
______是向学生传授系统的现代文化科学知识和技能、发展他们的智力、培养他们的能力的教育。