某公司计划通过四周的市场活动为其官方微博拉动人气。第一周该公司微博的关注人数增加了300人，往后三周每周的关注人数增量都是上一周增量的两倍。活动结束时该公司微博的关注人数是活动之前的4倍。则该公司活动前微博的关注人数是多少？（ ）

(单选题)We can learn from the passage that ( ). (单选题)According to the passage, when changes throw our work lives (单选题)By “the safety net we preserve requires a big trade-off” (li (单选题)From the first paragraph we can learn that ( ). (单选题)What should be done to meet the future challenges? ( ) (单选题)What do we learn about the private schools in the UK? ( ) (单选题)According to the passage, which of the followings is NOT the (单选题)What is the conclusion of a recently-published report? ( (单选题)What do we learn from the passage about creativity? ( ) (单选题)The crisis of comprehension is most probably resulted from (