阿里巴巴集团有（）个核心价值观，它们支配阿里巴巴员工的一切行为，是公司文化的核心部分。
A.3
B.4
C.5
D.6
参考答案：D
在面向对象方法中，信息隐蔽是通过对象的 【2】 性来实现的。
句型转换。
1．You need to change your mind.(对画线部分提问)
___ ___ I need to___?
2. Sara couldn't catch his. words because he spoke too quickly.(对画线部分提问)
___ ___Sara ___his words?
3.I learned to write my own original sentences by using grammar.(对画线部分提问)
___ ___you ___to write your own original sentences?
4.I don't know how I should use commas.(改为同义句)
I don't know ___ ___ ___commas.
5. Why don't you ask your teacher for help when you are in trouble?(改为同义句)
___ ___ ask your teacher for help when you are in trouble?
