新西兰南岛比北岛多雪峰和冰川,试分析原因。
参考答案:与北岛相比,南岛纬度高,山地比重大,平均海拔高,气温低;终年在湿润的西风控制下,加之山地地形的抬升,降水丰富。
用动词适当形式填空。
1. They ____________ (ask) us to clean the room yesterday.
2. Would you like ____________ (buy) a bottle of milk for me?
3. Be quick. Somebody ____________ (wait) for you.
4. Please ____________ (be) careful.
5. What else do you want ____________ (do)?
脱落、带器妊娠是使用宫内节育器失败的原因之一。