From the first paragraph, we learn that
A．night-shining clouds have become more shining but the formation becomes less frequent.
B．scientists believed that climate change contributes to the formation of night-shining clouds.
C．night-shining clouds become widespread and have started to form. at lower latitudes.
D．the formation of night-shining clouds is ten times more frequent than previously believed.

未分类题According to the passage, the common problem of many football clubs is thatA．they neglected the most important thing—the football field.B．the increase in expenditure has exceeded the increase in revenue.C．they pay too much to lure superstars from other teams.D．they are increasingly dependent on advertising.

未分类题The word 'uptick'(Line 1, Paragraph 3)probably means

未分类题The TV magnates are competing with each other for the right toA．attach themselves to an elite football club.B．show advertisements made with superstars.C．show live football matches of Premier League.D．sponsor the football matches because of their potential.

判断题杀毒软件可以清除各种未知的病毒。()

未分类题From the fourth paragraph, we can infer thatA．owners of football clubs are highly talented businessmen.B．football clubs' owners enjoy more privileges in the marketplace.C．the financial authorities have no right to regulate football clubs.D．football fans can protect football clubs against the bank's accusation.