2019自2020年英语周报高一课标第一期，小编收集了2019自2020年英语周报高一课标第一期的相关答案，没有答案的敬请期待！完整版的周报答案关注wx号：趣找答案
1. President Xi Jinping's speech at the opening ceremony of the First China International Import Expo was ________ welcomed by participants at the event.
A . quietly
B . frequently
C . widely
D . gradually
