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单项选择题

小儿嗅觉发育完善的时间

A.出生时
B.3～7天
C.4～5个月
D.4～5岁
E.6岁
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单项选择题
小儿深度视觉充分发育，视力达1.0的时间
A.出生时
B.3～7天
C.4～5个月
D.4～5岁
E.6岁
未知题型
听力原文： Officials from the United States, Japan and the European Union and South Korea (Rok) have signed a contract to build two nuclear power reactors in North Korea (DPRK). The 4.6-billion-dollar deal was finalized in Seoul Wednesday with the project' s main contractor South Korea' s Electric Power Corporation. A US State Department spokesman welcomed the signing as a milestonE.North Korea is to receive the two modern reactors under a 1994 agreement with the US which Pyongyang agreed to freeze its suspected nuclear weapons program.
The project' s main contractor was from______.
A.US
B.Japan
C.E.U.
D.South Korea
单项选择题
小儿可添加蛋黄的月龄是
A.1～2个月
B.3～4个月
C.6～8个月
D.10个月
E.1岁
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