正确答案: B
-8%
题目:如果+10%表示“增加10%”,那么“减少8%”可以记作( )。
解析:分析:正数和负数可以表示一对相反意义的量,在本题中“增加”和“减小”就是一对相反意义的量,既然增加用正数表示,那么减少就用负数来表示,后面的百分比的值不变。
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学习资料的答案和解析:
[单选题]12.
must
[单选题]CJoan is an American girl.(21)family is in New York.(22) is thirteen.She (23) salad a lot.
Her
解析:21.A【解析】指上句girl,并用其物主代词形式修饰family。
[单选题]BScientists are trying to make the deserts into good land again. They want to,bring water to the deserts. But more and more places of the earth is becoming deserts all the time, Scientists may not be able to change the deserts. Scientists think that people make deserts. People are do-ing bad things to the earth.
Because people don't keep the earth well.
解析:26.C【解析】文章第一段提供的信息表明良田变成了沙漠是人为的。故此题选C。
[单选题]文景之治是谁统治时期
汉文帝、汉景帝
[单选题]下列关于石油的叙述不正确的是( )
石油是一种化工产品
石油是一种混合物
可利用石油产品发电
将石油分馏可得到多种产品