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【简答题】
已知定义在R上的函数f（x）满足：f（x）= x 2 +2，x∈[0，1] 2- x 2 ，x∈[-1，0) ，且f（x+2）=f（x），g（x）= 2x+5 x+2 ，则方程f（x）=g（x）在区间[-8，3]上的所有之和为______．
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举一反三
【判断题】The two factors that promoted Chinese calligraphy are the square-shaped pictographic characters adn the writing brush.
A.
正确
B.
错误
【单选题】在Internet Explorer中打开一个网页的方法不可以是( ) 。
A.
在地址栏中输入网页的URL地址
B.
通过超链接
C.
利用搜索引擎查找
D.
利用标题栏
【简答题】What are the two factors that made the remote workers more happier?
【简答题】I understand the two factors that contributed to my downfall: _________________ (缺乏 职业目标和缺乏自信 ).
【单选题】What are the two factors that have affected the relationship between man and nature?
A.
The surge in human population and the acceleration of scientific and technological revolution.
B.
The scientific breakthroughs and the invention of nuclear weapons .
C.
The discovery of the New World and the Declaration of Independence.
D.
The outbreak of the Second World War and the nuclear threats.
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