句型转换。 l. Lucy has got a cough.(就画线部分提问)

胺碘酮延长心肌动作电位时程是由于（）。

A.Na⁺外流减少

B.Ca²⁺外流减少

C.K⁺外流减少

D.Mg²⁺外流减少

E.Cu²⁺外流减少

根据《合同法》的规定，被撤销的合同没有法律约束力的起始时间是( )

A．当事人订立合同时

B．当事人向人民法院提出申请时

C．人民法院受理当事人的申请时

D．合同被撤销时

短文改错。

    I often quarrel about my mother over whether I can watch TV after school. She holds view that senior one

students have to make fully use of every minute to work hard at their lessons. It seems to me that once I am

allowed to do that. I will unable to control myself and forget all about my study. She also thinks it is bad for

my eye. But I really can not accept her ideas. In my opinion, watch TV can set my mind at rest after a day's

a hard works. Besides, it is important for us to know what had happened at home and at abroad. Thus, we

shouldn't be forbidden to watch TV.

_________________________________________________________________________________________

（）是指社会主体由于自身的行为，而由外部给予的一种评价。它是外来的，来自于外部的评定和推断。

A、信用

B、信誉

C、诚信

D、负责

在UML中，定义了用例图来描述（）及他们之间的关系，而用例建模的主要工作是书写用例规约。

A.事件流

B.用例

C.参与者

D.对象