口算大比拼5×0=510×7=1-34=0+0=297×5≈33-22=3000_爱下问搜题

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问题解答题

口算大比拼
5×0=

510×7=

1-

3

4

=

0+0=

297×5≈

3

3

-

2

2

=

3000×2=

88×8=

7

9

-

5

9

=

400×3=

26÷5=

1

6

+

5

6

=

2×6+3=

875+25=

5+5×6=

答案

5×0=0，

510×7=3570，

1-

3

4

=

1

4

，

0+0=0．

297×5≈1500，

3

3

-

2

2

=1，

3000×2=6000，

88×8=704，

7

9

-

5

9

=

2

9

400×3=1200，

26÷5=5.2，

1

6

+

5

6

=1，

2×6+3=15，

875+25=900，

5+5×6=35．

选择题

_____ several times, he still could not make sense of it. [ ]

A. Having been told

B. Told

C. I le was told

D. Being told

单项选择题

手术病人从术前12小时禁食，4小时禁水是为了

A．减少术后感染

B．防止术后腹胀

C．防止吻合口瘘

D．防止术后伤口裂开

E．防止麻醉或手术中呕吐