因为宪法是一个国家的根本大法,所以宪法一经实施就不应该改变。
参考答案:错
— Betty, will you please come here and help me?
— Sorry, she is not here. She _____ to the cinema. May I help you? [ ]
A. goes
B. was going
C. will go
D. has gone
下列关于甲型肝炎的叙述,正确的是()
A.急性甲型肝炎的患者是传染源
B.血液中HAV主要出现于黄疸发生之前
C.慢性甲型肝炎的患者是传染源
D.无黄疸型甲型肝炎可以是传染源
E.黄疸出现之后患者血液通常无传染性