"做OG的Verbal,正确率只有70%左右" - not too bad for a starter.
"似乎有看到某人经验中说verbal正确率都在85%以上的,不知道有没有指望啊" - you just started and it is too early to worry about 600 or 700 or.. The key of OG? fully understand ETS questions, and how many scores do you get doesn't matter.