在横线里填上“<”、“>”、“=”。
800-4____800-40 750+500____570+700 1000-780____120+100
家兔前肢短、后肢长,这与它的某种运动方式相适应,这种运动方式是( )
— __________! I have a meeting to attend that day. Thank you all the same.
下列有关我国河流的叙述,正确的是( )
My daughter usually gets up at 6: 00 the morning, but Sunday morning she gels up at 8: 00.