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【单选题】
下列有关双卵双胎正确的是
A.
两胎儿体重相差悬殊
B.
两胎儿性别、血型可以相同，也可以不同
C.
易出现胎儿畸形
D.
易发生纸样胎儿
E.
胎儿死亡率高于单卵双胎
题目标签：有关
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参考解析：
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举一反三
【单选题】Much of the work of community service (_____)(有关) the care of the elderly and the handicapped.
A.
is concerned about
B.
is concerned
C.
is concerned with
D.
is worried about