文峰千家惠四月份的利润是25万元，预计六月份的利润将达到36万元，设平均每月增长的百分率为x，根据题意所列方程正确的是（    ）．

①把天平放在水平桌面上，指针指在分度盘的中线处，如图1所示，于是小丽同学就使用天平进行测量．此时，同组同学马上提醒说：测量之前应把游码向左移到标尺____．

②小丽接受了意见，进行相应调节，结果又发现天平横量不平衡，此时应向____（选填：左，右）端调节平衡螺母，使指针指到分度盘中线处．

③用调节好的天平测量瓷片的质量，所用砝码的个数和游码的位置如图2所示，则瓷片的质量是____g．

④他大小瓷片方步进量筒，于是改用如图3所示的方法侧瓷片的体积：

a．往烧杯中加入适量的水，把瓷片浸没，在水面到达的位置上作标记，然后取出瓷片．

b．先往量筒装入40ml的水，然后将量筒的水缓慢倒入烧杯中，让水面到达标记处，量筒里剩余水的体积如图所示，则瓷片的体积为____cm³．

⑤现在可以用密度公式计算出瓷片的密度ρ=____．根据以上步骤，你认为小李同学测出的瓷片密度值____（选填：偏大、偏小）．

On the past, there was a cute girl.

____改为____

（____）Well, don't be late for class. This is very important.

（____）Ok, so we must be on time. Can we bring music players to school?

（____）I see.

（____）Hi, my name's John

（____）Really? What are some of rules?

（____）No , we can't. And we always have to wear the school uniform(校服）.

（____）Oh , and we also have to be quite in the library.

（____）Hi, John. I'm Alice.

（____）This is a good school, but there are some rules.

（____）It's my first day at school