第一节:单项填空(共15小题;每小题1分,满分15分) 从A、B、C、D四个选项中,选出可以填入空白处的最佳选项。 --- How long are you staying? --- I don’t know. . A. That’s OK. B. It depends. C. I am going. D. It’s doesn’t matter.
A professor said the rise of the BRICS countries(金砖国家) is a/an _______ of the end of the world in the control of the USA.
A. barrier B. process C. aspect D. symptom