如图所示，光滑水平面上静置两个小木块1和2，其质量分别为m1=1.0kg、m2=4.

选词填空

从方框中选择正确的单词并用其适当形式完成下面的句子。

小题1:How many _______ are there in the factory?

小题2:Mr White often goes for a walk with his _________ dog.

小题3:Have you _________ dinner?

小题4:We like our Chinese teacher, so we listen to her lessons ________.

小题5:There are two books on the desk. One is mine, the other is ________.

小题6:October is the _________ month of a year.

小题7:If we don’t protect the environment, our future will be _______.

小题8:________ you for your help, it’s very kind of you.

小题9:We should stop the factory from ________ the river.

小题10:Paper________ by Cai Lun in Han Dynasty.

下列说法中正确的是[ ]

A．糖类物质的分子通式都可以用C_m(H₂O)_n来表示

B．凡能溶于水且具有甜味的物质都属于糖类

C．糖类都能发生水解反应

D．糖类是多羟基醛或多羟基酮以及水解能生成它们的化合物

根据供水水源水质，确定净水处理方案，净水处理方案包括（）。

A.重复利用水量

B.原水水质

C.主要设备

D.净水处理方块工艺流程

E.消耗定额

I feel _____ no use ____ so much money on that project.

A．that; spending

B．it; to spend

C．that; to spend

D．it; spending

气质与性格有何不同？