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【单选题】
特发性中枢性性早熟的临床表现特征是A.
患儿身高及体重增长减慢
B.
绝大多数在4～8岁出现，也有婴儿期发病者
C.
发育顺序与正常青春发育不同
D.
以男孩多见，占男孩性早熟的80%以上
E.
骨龄发育落后
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【简答题】还原反应速度与时间的关系曲线中具有()的特点
【单选题】We cannot infer from the article that ______．
A.
there are abundant mineral reserves in the mountains
B.
China's mineral deposits are evenly scattered
C.
China is rich in non-metal deposits
D.
Research and exploration in the eastern and western parts of China have to be intensified
【简答题】1970年4月24日，我国第一颗人造地球卫星“东方红一号”发射成功，为铭记历史、传承精神，经党中央国务院批准，自2016年起将每年的4月24日设立为____日。
【单选题】By the mid-1990s the public associated video games with rst-person-shooter games, in which players careened through 3D environments, mowing down enemies with extravagant weapons.
A.
cutting down an area of grass with a machine
B.
killing someone with a fusillade of bullets or other missiles
【单选题】According to the article we know it is ______ to prevent the forest from slowly disappearing.
A.
necessary but impossible
B.
necessary but difficult
C.
impossible and unimportant
D.
difficult and impossible
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