【单选题】Months prior to the launch of Huawei’s P30 series mobile phones, marketers created topics on social media about the new phones and the coming release events. These marketing efforts are made to ______...
【简答题】Passage C Cell phones are a er on the road in more ways than one. Two new studies show that talking on the phone while traveling, whether you’re driving or on foot, is increasing both pedestrian d...