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问题 单项选择题

往血液中注入大量低渗溶液时，红细胞可能会

A．溶血

B．水解

C．皱缩

D．凝聚

E．膨胀

答案

参考答案：A

解析：大量低渗溶液会是红细胞膜外的水分进入细胞，从而使得红细胞胀大破裂而发生溶血。

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Do you find that when you are busy with your study on the Internet, the speed of your computer slows down   小题1:  sometimes? It is probably because your computer gets infected by virus (病毒), which can make it more difficult for you to use the computer. How to keep viruses小题2: your computer is a problem now. But in fact, nothing can ensure (保证) the security of your computer one hundred percent. There are, somehow some things you can do to  小题3: your computer’s security system and decrease (降低) the possibility of an infection.

You can   小题4: your system up to date with the current anti-virus software (反病毒软件), and use the following methods
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选择题

There is ______ with the recorder. [ ]

A. anything wrong

B. wrong anything

C. something wrong

D. wrong something

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