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【单选题】
集合{x| (x-1)(x+2)=0}可化简为( )A.
{1}
B.
{-2}
C.
{1，一 2}
D.
{-1，2}
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反馈参考答案：
举一反三
【单选题】_____ sleep too late, It’s bad for your health. A. Do B. Not C. Don’t D. Please not
A.
Do
B.
Not
C.
Don’t
D.
Please not
【单选题】sleep too late. It’s bad for your health(健康). [ ]
A.
Do
B.
Not
C.
Don’t
D.
Please not
【判断题】Western PA partly origined from the conflits between government management and democracy system.
A.
正确
B.
错误
【简答题】阅读下面短文，简要回答问题。 One of the greatest things about growing older is that you get to stay up late. It’s not just your parents who that decision. Your body lets you enjoy dark hours, too. Resent study has ...
【简答题】“Eat your breakfast. It is the most important meal of the day!” Why are parents always saying that? Any breakfast is better than no breakfast at all, but try not to have junk food all the time. They a...
【单选题】Japan remains tied to the Western camp partly because the relationship has become______to her economy and politics over forty years' association.
A.
integral
B.
unilateral
C.
rational
D.
hierarchical
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