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化学与生活密切相关，请你用化学知识回答以下生活中的问题． （1）我们常用的洗涤剂清洗餐具上的油污，这是因为洗涤剂具有______的功能． （2）微量元素对人体健康的影响很大，如缺______会引起贫血． （3）多吃水果、蔬菜可补充人体需要的少量______，此类物质可调节体内各种化学反应． （4）碘酒是家庭常备药，碘酒中的溶剂是______（写化学式）．
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【简答题】民用建筑主要由哪些部分组成?各部分的基本作用是什么?
【单选题】H e had lived illegally in the United States for five years after his visitor's visa ( ).
A.
a bolished
B.
e xpired
C.
a mended
D.
c onstrained
【单选题】He had lived illegally in the United States for five years after his visitor's visa ______.
A.
was due
B.
was overdue
C.
exceeded
D.
expired
【单选题】He had lived illegally in the United States for five years after his visitor's visa _____.
A.
inspired
B.
vanished
C.
expired
D.
perished
【单选题】He had lived illegally in the United States for five years after his visitor's visa ______.
A.
wad due
B.
was overdue
C.
exceeded
D.
expired
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