Thanks ____ to your party.
不同类型的聚落所呈现出的景观有较大差异是因为( )
Next week, ____ the students will have a basketball game.
若x=1满足不等式ax2+2x+1<0,则实数a的取值范围是( )
建立自然保护区是保护生物多样性的根本措施。(判断对错)