下列说法错误的是（ ） A．阳离子一定带有正电荷 B．带电荷的原子团一定是酸根

第二节 短文改错（共10小题，每题1.5分，满分15分）

此题要求改正所给短文中的错误。对标题号的每一行作出判断：如无错误，在该行右边横线上画一个勾(√)；如有错误(每行只有一个错误)，则按下列情况改正：

此行多一个词：把多余的词用斜线(\)划掉，在该行右边横线上写出该词，并也用斜线(\)划掉。

此行缺一个词：在缺词处加一个漏字符号(∧)，在该行右边横线上写出该加的词。

此行错一个词：在错的词下划一横线，在该行右边横线上写出改正后的词。注意：原行没有错的不要改。

Dear Sally,

Now I' d like to tell you something about my part-time job this   76.________

summer vacation, in which I worked like a guide in a travel agency.   77.________

The work was interesting but tired. I think it was helpful to work this 78.________

holiday. That was the first time that I have earned money on my own. 79.________

I've come to understand how hard my parents work to support for     80.________

the family. I used to keep on ask them for money, but now I' 11 never   81.________

waste money and learn to share worries with my parent. I've learnt how  82.________

to get along well with others. What' s worse, I' ve gained some working  83.________

and social experience and I have learnt something can't be learnt from  84.________

textbooks. All this will be good for my future. In the word, I had a    85.________

wonderful and valuable summer vacation.

如图所示，用细绳OA、OB悬挂一重物，在保持O点和A点不变的情况下，使细绳OB沿着半圆形轨道由B点缓慢移向C点。在移动的过程中，细绳OB中拉力大小的变化情况是

A．一直减小

B．一直增大

C．先减小后增大

D．先增大后减小

下列关于质押的说法，错误的是()。

A.质押是债权人所享有的通过占有由债务人或第三人移交的质物而使其债权优先受偿的权利

B.享有质权的人称为质权人

C.质押担保的范围只包括主债权及利息

D.以质物作担保所发放的贷款为质押贷款

紫外线照射不但可以治疗急性浅面性炎症，还可以治疗系统性红斑狼疮、急性湿疹。

大型储罐罐底焊缝的致密性，应采用（）方法进行检查。

A.充水试验

B.氨气试验

C.真空箱试验

D.煤油渗漏试验