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【单选题】
一种在儿童中非常流行的病毒感染导致30%被感染的儿童患了中耳炎。对细菌感染非常有效的抗生素对这种病毒却无能为力。然而，当因病毒感染而患中耳炎的儿童接受抗生素治疗后，中耳炎却得到了治愈。以下哪一项最好地解释了上文中明显的不一致?A.
虽然有些抗生素不能杀死病毒，但另一些抗生素却可以杀死病毒。
B.
被病毒感染的儿童极易受到导致中耳炎的细菌的侵害。
C.
有许多没有感染的儿童也患了中耳炎。
D.
大多数病毒感染比细菌更难治疗。
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举一反三
【简答题】In the passage, the er of some parents in raising bicultural children is ______.
【单选题】The children are having a good time, ______ with sand, others with toys．
A.
some of them playing
B.
some of them are playing
C.
some of them
D.
who playing
【单选题】Some parents are always comparing their children __________other children. [ ]
A.
for
B.
to
C.
with
D.
as
【单选题】'Part-time' children______.
A.
spend some of their time with their half brothers and some of their time with their half sisters
B.
spend all of their time with one parent from the previous marriage
C.
are shared between the two former spouses
D.
cannot stay with 'full-time' children