A:Unle
B:In case
C:Provided
D:Until
改革开放以来,我国进入了一个尊重财富、鼓励创造的时代。广大人民群众创造财富的积极性空前高涨。创造财富的源泉有( )
①勤劳 ②智慧与开拓 ③科技 ④资本、管理等因素
函数y=2-x的自变量x的取值范围是____ .
Read and write. 根据提示写单词,将短文补充完整。
This is a ____ (大的) zoo. Look! There are ____ (六个) animals here.
Look! This is a ____ (猪) . It's so ____ (肥胖的). It's drinking____
(牛奶) now. How cute it is !