
【名词&注释】
氧化铁(iron oxide)、混合物(mixture)、碳酸钠(sodium carbonate)、所得税(income tax)、消费税(consumption tax)、硫酸铜(copper sulfate)、氢氧化钾(potassium hydroxide)、化学变化(chemical change)、天然资源(natural resources)、与生俱来
[单选题]我国有端午节吃粽子的风俗,“返青粽叶”包装的粽子中含有硫酸铜,误食这样的粽子有害健康。硫酸铜属于
A. 混合物
B. 氧化物
C. 盐
D. 酸
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举一反三:
[单选题]不属于我国流转税的税种是( )。
A. 营业税
B. 增值税
C. 消费税
D. 所得税
[单选题]BMike is an English boy. He doesn't often look after(照料) his things well. And he never(从不) put them away. Look! His things are everywhere in the room. The pencil case and some books are on the bed. The kite(风筝) is under the desk. The soccer ball is in the desk. One of the socks is on the watch. Oh, he can't find it . The trousers are behind the chair. The shoes are behind.the door. The shoes are worn out(穿破). He can’t mend them.Tom is his friend.He wants a knife to mend the broken kite.But he can't find it anywhere.
A. Tom is Mike's________ .
B. teacher
C. student
D. classmate
E. friend
[单选题]下列物质的化学式的读法和写法都正确的是
A. 碳酸钠Na
B. CO3
C. 硫酸H2SO4
D. 氧化铁O3
E. Fe2
F. 氢氧化钾(potassium hydroxide)K(OH)2
[单选题]2. There's hardly any milk in the bottle,________ ?
A. is there
B. isn't there
C. is it
D. isn’t it
[单选题]结合本文,下列说法不正确的一项是 ()
A. 生活中幽默有时候会起到非常好的效果,把矛盾、尴尬化为淡然一笑中。
B. 有辱对方自尊的嘲笑不是幽默的表现。
C. 有人的幽默素养是与生俱来的,有人的幽默素养是通过模仿得来的。
D. 生活是幽默的源泉。
[单选题]下列关于空气的说法中正确的是( )
A. 按质量计算,空气中含有氮气4/5,含有氧气1/5
B. 空气是成分固定不变的气体
C. 空气是一种十分重要的天然资源(natural resources)
D. 空气被压缩时体积变小是化学变化(chemical change)
[单选题]我国陆地领土面积约为:
A. 960平方千米
B. 980平方千米
C. 960万平方千米
D. 980万平方千米
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