Don't forget____ (take) your pen because you might want to write something.
10+20=____
3+8=____
80-60=____
40+20=____
18-9=____
22-20=____
70-40=____
30+50=____
7+4=____
45-5=____
①实践是获得认识的唯一途径 ②实践是认识的基础
③间接经验最终来源于实践 ④实践是认识的产物
在地图上不能作为确定方向依据的是( )
看图片,选择正确的句子。
⒈ ____
⒉ ____
⒊ ____
A.It's a cute monkey.
B.This is a tiger.
C.Look, it's a horse.