【单选题】I tried to make everybody ______ comfortable here.
【简答题】已知关于x的一元二次方程x 2 +2x+3k=0有实数根, (1)求k的取值范围; (2)设x 1 ,x 2 为方程的两实数根,求y=x 1 ?x 2 +5的最大值.
【简答题】已知x是一元二次方程x 2 +3x-1=0的实数根,求代数式: x-3 3 x 2 -6x ÷(x+2- 5 x-2 ) 的值.
【单选题】关于“红中社”,下列说法错误的是
B.
主要为临时中央政府文告、宣言、红军战报和根据地建设消息
【简答题】设方程x 2 +3x-5=0的两个实数根为x 1 、x 2 ,求 1 x 1 + 1 x 2 的值.
【单选题】I talked for a long time, and in the end I ____ make her believe me. [ ]
【单选题】No matter how I tried to read it,I just couldn’t make_____of the sentence. [ ]
【单选题】下列物质中,不经过人体的消化可直接吸收的是( )
【单选题】My father is sleeping soundly, so I tried my best ____________ any noise.
C.
not to make C. to make not C. to make