May 12^th is Xiao Ming's birthday. He ______ us to his birthday party. [ ]

A. asks

B. invites

C. makes

D. tells

新疆的红色系列（西红柿、石榴、枸杞）特别有名，是因为[ ]

A．夏季昼夜温差大，有利于糖分积累

B．夏季热量充足，有利于瓜果着色

C．夏季炎热干燥的气候和稳定的灌溉水源

D．降水丰富