4.
3.8x2.4-2.8x2.4
=2.4x(3.8-2.8)
=2.4
15+6.7x3.5
=15+23.45
=38.45
2.31x10.1
=2.31x(10+0.1)
=23.1+0.231
=23.331
8x0.125/0.125x8
=1/0.125x8
=8x8
=64
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c,c
3.C
4.D.
5.A.
6.定义域为[-1,1]. 极限=1
7.a=e^(-2)
8.间断点是-2,3
9.dy=2dx/(1+4x^2)
1better
2seen
3happy
4money
5heard
6take
7more
8next
9What
10wonderful
ACBAB DCCBB DCABA
1. I'd like to volunteer for the Red Cross class.
2. At 12:00 midnight , I called my friend to see a film together.
3. I'm very busy but I could help you .
4. Summer vocation is ing , and I want to have a trip.
5. I want to travel alone.My parents told me don't do that .
25.020Kg 24.972Kg 24.985Kg 24.975Kg 25.028Kg
25.000Kg 25.002Kg 25.995Kg 24.977Kg 24.993Kg
x-2/3×6>3x+1/2×6-1×6 2x-4>9x+3-6 2x-9x>4+3-6 -7x>1 x>-1/7
上百度就行
ABBD
您好,您可以在百度中搜索==韩国春节.ppt