The natural unemployment rate________I. occurs when only there is no cyclical unemployment present.II. is the unemployment rate when the economy is at potential A: I only. B: II only C: neither I nor II. D: I and II

Which of the following descriptions are correct? A: Class I MHC present endogenous antigens to CD4+ T cells B: Class I MHC present endogenous antigens to CD8+ T cells C: Class II MHC present exogenous antigens to CD4+ T cells D: Class II MHC present exogenous antigens to CD8+ T cells

The headmaster required that all the teachers ______ at the meeting. A: present B: must be present C: be present D: would be present

_______ looked up in alarm. A: All the present women B: All the women present C: The all women present D: The all present women

President Bush, together with his wife and daughter, ______at the opening ceremony of the 29th Olympic Games in Beijing. A: are present B: is present C: were present D: was present

22. What is the difference between present girls and former girls according to the passage? A: Present girls choose husband by their parents. B: Present girls get more parental support. C: Present girls are financially independent. D: Present girls are more dependent on their parents.

________, we made a plan for the future study. A: Summarized our present work B: Summarizing our present work C: Having summarized our present work D: Being summarized our present work

present

Your ____ is a present to the world. A: presence B: absence C: present D: absent

在linggle中，想知道 present a method 后一般接哪些词，可以在搜索框中输入（ ）。{提醒：这个最好进入www。linggle。com 亲自试一下！}。 A: present a method % B: present a method ？ C: present a method # D: present a method _