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【单选题】
当ax2+bx+c=0的解的判别式为0,则该一元二次方程的解的情况是A.
两个不相等的实数解
B.
两个相等的实数解
C.
无实数解
D.
无法判断
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】My father has worked for 20 years in the field of medicine, so he has_______ a huge amount of experience.
A.
achieved
B.
piled
C.
completed
D.
accumulated
【单选题】This coat doesn't fit him well, as he has_____ a huge body and the coat is_____ small. [ ]
A.
so; such
B.
so; so
C.
such; such
D.
such; so
【单选题】There was an oddly______inflection to his speech, some said, a sense of merely going through the motions.
A.
roguish
B.
lackadaisical
C.
mellifluous
D.
acerbic
E.
reserved
【简答题】The Sun has a huge effect on ______ .
【单选题】保险进社区对充分发挥保险的社会管理功能具有促进作用，具体表现在( )
A.
丰富社区功能，促进社区建设
B.
普及保险知识，提高保障水平
C.
强化社会管理，服务和谐社会
D.
另外三项全包括
【简答题】The period between an early sense of foreboding and an actual career inflection point is the time for you to ______.
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