慈善信托的受托人,由()确定其信赖的慈善组织担任。
A.捐赠人
B.委托人
C.自然人
D.法人
参考答案:B
The first African-American president of the United States received a(n) _____ welcome in the African countries, where he was received as a returning son.
A.romantic
B.bureaucratic
C.enthusiastic
D.optimistic
尿液保存可使用的防腐剂有()
A.甲醛
B.甲苯
C.冰醋酸
D.浓盐酸
E.浓硫酸