台湾最著名的树种是（　　）

若n≥6时，有${\left(1-\frac{1}{n+3}\right)}^n<\frac{1}{2}$，则在m∈N^*时，下列不等式成立的是（　　）

春季是流行性腮腺炎的高发季节，曾经感染过腮腺炎病毒的人，可对此病产生终生免疫．下列关于这个现象的叙述，错误的是（  ）

    It is Saturday morning. Mrs. Black and her daughter Kate go to the bookshop near their house. Mrs. Black wants to buy some picture books for her grandson. Kate wants to buy some storybooks. In the bookshop Kate meets her old classmate, Sue. They are good friends. They talk and talk for a long time and forge to buy books. At twelve o'clock Mrs. Black finds them and asks Sue to go and have lunch in their house, Sue says: “Yes.” The two girls are very happy.