【名词&注释】
浓硫酸(concentrated sulfuric acid)、世界语(esperanto)、石灰水(limewater)
[单选题]．下列物质露置于空气中，质量不变的是
A. 石灰水
B. 氧化钠
C. 浓盐酸
D. 浓硫酸
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点击获取本科目所有试题
举一反三：
[单选题]22．Americans have _______ for breakfast．
A. hamburgers，milk and fruits
B. salad，coffee and fish
C. eggs，bread and milk
D. sandwiches，fruits and hamburgers
[单选题]A lovely girl, ______?
A. isn’t she
B. isn’t it
C. is she
D. it
[单选题]_____________( )53.
A. and
B. the
C. /
D. to
[单选题]_______________.
A. into
B. of
C. for
D. from
[单选题]13．
A. difficult
B. useful
C. easy
D. interested
[单选题]可以作为溶质的（ ）。
A. 只有固体
只有液体
只有气体
气体、液体、固体都可以
[单选题]30． In fact Tom _______．
A. liked glasses
B. went to the wrong shop
C. couldn't read at all
D. knew the man in the shop
[单选题]14．
A. first
B. another
C. last
D. other
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