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【简答题】
(1) 3 ×(-4)+(-4) 2 ÷(-8) (2) -3×( ) 2 (3) 求代数式 的值，其中a＝－1．
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举一反三
【简答题】Please introduce a tourist destination that you'd like to share with others. You may use slide show to illustrate it, and the duration should be no more that 2 minutes. Name your PPT with your name+st...
【判断题】According to the content in text book Page 17, are the following statements true or false? It is not polite to keep ege contact when you shake hands with others.
A.
正确
B.
错误
【单选题】Soil colloids are negatively charged, so when the following fertilizers with the same total nitrogen content are applied in the soil, the fertilizer efficiency is the worst.
A.
(NH 4 ) 2 .SO 4
B.
NH 4 Cl
C.
（ NH 4 ） 2 CO 3
D.
NH 4 NO 3
【单选题】When you are reading a novel, you should check your understanding of the content after ______.
A.
every four or five pages
B.
every section
C.
every chapter
D.
every ten or twelve pages
【单选题】When you are reading a novel, you should check your understanding of the content after ______.
A.
every chapter
B.
every section
C.
every four or five pages
D.
every ten or twelve pages
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