在a÷b=5…2中，当a、b同时扩大10倍后，商仍然是5，余数是2．______

短文改错（共10小题，每小题1.5分，满分15分）

Nowadays college students have a little ways to pay their college fees.         小题1:_______

Many students had their parents pay the fees. Some students may apply            小题2:———

to a bank loan and others will try to find part-time jobs in and out of               小题3:———

the campus. Apart from this, many good student can win a scholarship.            小题4:————

In this way they can pay at least part of the fees. As to me, I will let               小题5:________

my parents pay half of my fees because they are rich enough.             小题6:________

Beside my study, I will take up a part-time job by means of                小题7:________

teach some high school students maths, physics, chemistry and English.      小题8:________

The reason is why I’m very good at these important subjects. Of course I will       小题9:_______

also work very hard at my lessons in order to I can easily win a scholarship.         小题10:______

沉迷于上网或电游，不但影响学业，而且因长时间近距离注视屏幕，会导致眼球中的哪一结构凸度增大 [ ]

A．巩膜

B．玻璃体

C．晶状体

D．视网膜

为了防止发电机轴电流造成的电化学腐蚀，汽轮机各轴承应稳固接地。

按照《合同法》的规定，发盘还可以称为（）。

A、要约

B、反要约

C、承诺

D、生效