34减去23与12的积，所得差的倒数除5，商是多少？_爱下问搜题

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问题解答题

3

4

减去

2

3

与

1

2

的积，所得差的倒数除5，商是多少？

答案

3

4

-

2

3

×

1

2

，

=

3

4

-

1

3

，

=

5

12

；

5

12

的倒数是

12

5

；

5÷

12

5

=

25

12

；

答：商是

25

12

．

选择题

It is not rare in that people in fifties were going to university for further education．

A．90s; the

B．the 90s；/

C．90s; their

D．the 90s; their

填空题

《水浒传》中李俊的绰号是（）。