--Do you have a school trip?--Yes，_________._刷题宝

题干

--Do you have a school trip?

--Yes，_________.

A：we do

B：we have

C：we are

上一题下一题 0.0难度选择题更新时间:2018-01-21 05:01:42

答案(点此获取答案解析）

A

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甲醇质子交换膜燃料电池中将甲醇蒸气转化为氢气的两种反应原理是
①CH₃OH(g)＋H₂O(g)＝CO₂(g)＋3H₂(g)；△H＝＋49.0 kJ/mol
②CH₃OH(g)＋1/2O₂(g)＝CO₂(g)＋2H₂(g);△H＝－192.9 kJ/mol
下列说法错误的是

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下列函数在区间（0，+∞）上，随着x的增大，函数值的增长速度越来越慢的是（　　）

同类题3

Nowadays， we don't have enough resources to use. So it's everyone's duly to save them for the future. To save resources， we should __________.

①throw away a pencil without completely using it

②collect waste things for recycling

③go to school by kike instead of by car

④turn off the tap while brushing our teeth

⑤keep the lights on day and night

同类题4

单项式﹣3x²y³z的系数和次数分别是（）

同类题5

a > 0

a \neq 1

f (x) = a^{x} - 1

(- \infty, + \infty)

上是增函数，则函数

g (x) = {log}_{a} | | x | - 1 |

的图象是( )

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