JEO
6x²-5x-10=4
x=？
12 or -7
Ms Li is a b________ teacher.
！！！！！
When did the opening ceremony of the 2022 Paralympic Winter Games be held?
March 4th
There are twenty chickens and rabbits and 44 feet, so how many rabbits are there ?
2
How many points does a player make a free throw successfully in a basketball game?
1 point
In the Second World War, which battle broke the myth that the German army was invincible (不可战胜的)?
A. Battle of Warsaw B . Paris defense
C. Battle of Moscow
C. Battle of Moscow
Where does iron(Fe) rank in the periodic table(元素周期表）?
26
This spring morning in bed I'm lying.
Not to awake till birds are crying.
After one night of wind and showers,
How many are the fallen flowers!
What is the name of this poem?
A spring morning
There is a mixture of two metals with a certain quality. Add an appropriate amount（适量） of dilute sulfuric acid（稀硫酸）, and the reaction is just complete（恰好完全反应）. It is measured that 0.2 g of hydrogen（氢气） is generated. After evaporating the solution, 13.6 g of solid is obtained. Then the composition of the metal mixture cannot be？
A. Mg ,Fe B. Al , Fe C. Zn, Mg D. Fe, Zn
D. Fe, Zn
Name three achievements of Qin Shi Huang.
eg. Unified China/Create the emperor system/Unified currency/Unified weights and measures.