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【判断题】
若平面曲线 在点 处存在切线,则函数 在点 处必可导A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】Why wasn't there a better early-warning system for the natural disaster, like the tsunamis?
A.
Because people were not afraid of that
B.
Because tsunamis never happens in Indian Ocean
C.
It would cost too much money
D.
It was difficult for the people in Indian Ocean region to expect such an experience
【简答题】Hurricane Andrew was the second costliest natural disaster in the United States.
【单选题】The earthquake is the most unpredictable natural Disaster．
A.
Right
B.
Wrong
C.
Not mentioned
【多选题】感谢媒体,让我们经常获知这样一些悲惨的新闻:哪里的楼房突然坍塌,哪里的大桥突然崩裂,哪里发生了集体食物中毒事件...... 我们都是普通百姓,时刻担心这样的灾祸突然发生在自己身上。 这些悲剧都不是天灾,而是人祸。 因为某些人的疏忽,渎职,贪财,恶意,导致众多无辜的生命暴卒。由于种种原因,有的责任者受到了应有的惩罚,有的责任者却毫发无损,逍遥法外...... 你相信宿命意义上的恶有恶报吗?
A.
1、决不相信。
B.
2、半信半疑。
C.
3、正好相反——恶有善报，或者善有恶报。
D.
4、坚信。
【单选题】The earth quake is the most unpredictable natural disaster．
A.
right
B.
wrong
C.
not mention
【简答题】小干扰RNA的基本特征是:全长20-25nt ,3’末端具有______突出的粘性末端和羟基,5’末端含有磷酸基团,且siRNA的序列与靶基因之间具有高度________ 。
【单选题】Why Wasn't there a better early-warning system for the natural disaster, like the tsunamis?
A.
Because people were not afraid of that
B.
Because tsunamis never happens in Indian Ocean
C.
It would cost too much money
D.
It was difficult for the people in Indian Ocean region to expect such an experience
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