虽然我也痛恨中国政府不允许双重国籍，而且中国公民入籍外籍后，中国国籍自动取消，但是两位不要以为只是中国政府才做这样的事情。 其他一些国家也有类似的政策，比如 （请看下划线的那句话）。 偏见无知最可怕。
zh.wikipedia.org
“新加坡一般不承認雙重國籍，但對於22歲或以下的人仍容許[7]。這種雙重公民身分可能因在外國出生、從其外國公民的父母或歸化而獲得公民權。新加坡公民18歲後取得外國國籍，可能喪失新加坡國籍[8]。入籍新加坡的外國人須放棄外國國籍。在外國出生、因血統或歸化而取得雙重或多個國籍的未成年人，需要在22歲時放棄所有外國國籍，否則可能會失去他們的新加坡國籍[9]。 ”
一下是新加坡宪法的相关原话：
sso.agc.gov.sg
Deprivation of citizenship on acquisition of foreign citizenship
134.—(1) The Government may, by order, deprive a citizen of Singapore of his citizenship if the Government is satisfied that —
(a)
he has, while of or over the age of 18 years, at any time after 6th April 1960 acquired by registration, naturalisation or other voluntary and formal act (other than marriage) the citizenship of any country outside Singapore or having so acquired such citizenship before the age of 18 years continues to retain it after that age; or
(b)
the citizen, being a woman who is a citizen of Singapore by registration under Article 123(2), has acquired the citizenship of any country outside Singapore by virtue of her marriage to a person who is not a citizen of Singapore.
(2) Where the Government has made an order under this Article depriving a citizen of Singapore of his citizenship, he shall cease to be a citizen with effect from the date of the order.