Question

6．下列不等式組無解的是（　�。�

• A． $\left\{\begin{array}{l}{x＞-3}\\{x＜2}\end{array}\right.$
• B． $\left\{\begin{array}{l}{x≥-1}\\{x＜-1}\end{array}\right.$
• C． $\left\{\begin{array}{l}{x≥4\frac{1}{2}}\\{x≤4\frac{1}{2}}\end{array}\right.$
• D． $\left\{\begin{array}{l}{x≤-3}\\{x＜-4}\end{array}\right.$

Answer 1

分析 利用不等式組取解集的方法判斷即可．

解答 解：不等式組無解的是$\left\{\begin{array}{l}{x≥-1}\\{x＜-1}\end{array}\right.$，
故選B

點評 此題考查了不等式的解集，熟練掌握不等式取解集的方法是解本題的關(guān)鍵．