【C14】A．behaviorB．purchaseC．activityD．consumption

【C5】A．drinkableB．consumedC．edibleD．consumption

What should people do to receive a gift？A．Visit the storeB．Make an online purchaseC．Mail i

【C17】A．sensitivityB．creativityC．activityD．ideality

【C2】A．bargainB．purchaseC．callD．agreement

What is the lecture mainly about？A．Methods of observing unusual animal behaviorB．A theory

下面哪个不是安卓四大组件之一（)A.contentproviderB.intentC.activityD.service