某历史学习小组围绕“西藏和平解放”“土地改革”“抗美援朝”进行研究性学习。该小组研究的主题应是（    ）

一件衣服标价132元，若以9折降价出售，仍可获利10%，则这件衣服的进价是 (    )

    Hi, I'm John. There are four seasons in a year. I like them all. In spring, it's warm. There are pretty flowers everywhere. I often go on a picnic with my parents. Summer is hot. I often go swimming in the pool. I like to wear my sunglasses. In fall, the weather is cool. I can help my grandpa pick apples. Winter is white. I can make a snowman. And I can go skating, too.