等电聚焦电泳可以测定蛋白质等电点。_爱下问搜题

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问题判断题

等电聚焦电泳可以测定蛋白质等电点。

答案

参考答案：对

完形填空

At the age of 13，I visited a doctor with my parents. As I sat in the examining chair，the doctor looked into my 　31　.“She did inherit (继承) it，”he said with coldness.“You need to be prepared. There is no 　32　 for this disease.”
My father 　33　a gene which，in most cases，results in blindness. I’d inherited the gene. He gradually 　34　 his eyesight and so did I. At last we were both 　35　 blind—he was fifty-seven years old，　36　 I was only twenty-eight.
My world 　37　 as the darkness fell，　38　 the dreams my husband and I had for us and for our three little boys. But 　39　 I tried to find some hope and 　40　，my eyes were opened to a new realization.
My father had 　41　 me not just failing eyesight，but an example of 　42　 in the face of hardships as well. We were all living in Bolivia in 1964 when he decided to 　43　 the family to America. He worked tirelessly to 　44 the right of living in the US.
Alone in the States，he 　45　 his helplessness and lack of fluency in English. He managed to rent a small apartment，and nine months later，sent airline tickets for my mom，my brother and me.
Decades later，　46 an American citizen，I look back at what he'd shown me. He set an example proving that determination is important to success. His 　47　 taught me valuable lessons for my own path in the darkness.
I did the same as I stepped into a 　48　 world. I fulfilled (完成) my own 　49　 as a wife，mom，Sunday school teacher and Spanish interpreter. What I inherited from my father helped me to 50　 my life in a whole new light.

A．contribution

B．determination

单项选择题

下列论述错误的是( )。

A．特性可以是固有的或赋予的

B．完成产品后因不同要求而对产品所增加的特性是固有特性

C．产品可能具有一类或多类别的固有的特性

D．某些产品的赋予特性可能是另一些产品的固有特性