口算4000÷80=12×20=48÷3=13×40=800÷50=40×20=

题型:解答题

问题:

口算
4000÷80=

12×20=

48÷3=

13×40=

800÷50=
40×20=16×4=720÷60=3×4×25=3504÷79×0=
考点:认识乘法
题型:解答题

Mr. George works at the school lost and found. He works very carefully. Every day, when he gets a lost thing, he takes notes about it. There are pens, books, school uniforms, keys, walkmans and many other things in the lost and found. Most of them are the students’. If you lose your things, it’s easy for you to go to the lost and found for help. But you must tell Mr. George what it is and its color and the day when you can’t find it. I think Mr. George is very helpful, and you will be happy when you find the lost there.

小题1:Who works at the school lost and found?

A.Mr. Brown

B.Mr. King

C.Mr. George

D.Nobody小题2:There are ________ things in the lost and found.

A.no

B.few

C.a few

D.many小题3:Most things Mr. George takes care of are the ________.

A.boys’

B.girls’

C.students’

D.teachers’小题4:If you lose your things, you’d better go to ask________.

A.Ben

B.Mr. George

C.your teacher

D.your parents小题5:If you lose your things and go to the lost and found for help, you needn’t tell Mr. George________.

A.What it is

B.how much it is

C.its color

D.the day when you lost it.

题型:解答题
4
9
的算术平方根是______,
64
的立方根是______.
题型:解答题

下列关于场外交易的说法,错误的是( )。

A.无固定的场所

B.由交易者和委托人通过电话和电脑网络直接进行交易

C.交易清算便捷

D.交易规则烦琐

题型:解答题

光通信中段开销区域用于帧定位、运行、管理和维护等信息,以保证信息净负荷正确灵活地传送。

题型:解答题

下述尖牙保护的优势说法不正确的是()

A.尖牙位于牙列较弯处,力减弱

B.尖牙牙根长于冠两倍

C.尖牙牙根粗壮而长大

D.尖牙位于唇侧

E.尖牙的牙周膜有丰富感受器

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