在Activity中，获得ContentResolver对象的方法是（）

使用Android Studio创建Activity时，Activity会默认继承（）类 启动模式是指，每次启动该Activity时，系统会这个Activity的实例这个Activity实例对应的任务移除 The extra benefit that results from carrying out one additional unit of an activity is the__ of the activity（） The extra cost that results from carrying out one additional unit of an activity is the__ of the activity（） activity意思__ 在Activity代码中同样也可以引用自定义主题,只需要在Activity类onCreate()方法内添加【】方法即可 在Activity生命周期的方法中, ________方法是在Activity实例对象被创建后用来初始化这个实例对象的。 standard是Activity默认的启动模式，在不指定Activity启动模式的情况下，所有Activity使用的都是standard这种模式( ) 在Activity中不能通过哪些方式获取Service对象?() _____是一种嵌入在Activity中的UI片段。 可以在Activity中得到ContentResolver实例对象的方法是（） Do you know the activity called “________ Lights” —Oh,it’s an activity that reminds people of saving energy. Do you know the activity called “________ Lights” ?—Oh,it’s an activity that reminds people of saving energy. ( ) is a technique for estimating the duration or cost of an activity or a project using historical data from a similar activity or project. Site of activity for penicillin The marginal benefit of an activity is the（） The marginal cost of an activity is the（） What activity is in October? 创建一个Activity必须继承自android.app.Activity或者其子类。 In a listening activity, students are asked to note down the time and places of events. The aim of this activity is to develop the skill of__________.