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【单选题】
世界旅游组织的最高权力机构是( )。A.
国际联盟
B.
全体成员大会
C.
世贸组织
D.
世界旅游组织
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举一反三
【简答题】有丝分裂与减数分裂 (Mitosis／Meiosis)
【单选题】Which of the following is unique to mitosis and not a part of meiosis?
A.
homologous chromosomes pair forming bivalents
B.
homologous chromosomes cross over
C.
chromatids are separated during anaphase
D.
homologous chromosomes behave independently
【简答题】古琴琴面之上有用于琴弦音位标志的（ ）个徽点。
【单选题】which of the following events occurs during mitosis but not meiosis?
A.
segregation of sister chromatids
B.
pairing of homologous chromosomes
C.
alignment of chromosomes on the metaphase plate
D.
crossing-over between homologous chromosomes
E.
none of the above
【单选题】Mitosis results in ( ) chromosome number while meiosis results in ( ) chromosome number.
A.
a doubling of; no change in
B.
no change in; on change in
C.
a reductionq by half in; no change in
D.
no change in; a reduction by half in
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