俗话说，大鱼吃小鱼，小鱼吃虾虾，虾虾吃泥沙，鱼虾的排泄物又滋养泥沙。这一现象说明

发布时间：2017-07-04 15:16 │ 来源：www.tikuol.com

题型：选择题

问题：

俗话说，大鱼吃小鱼，小鱼吃虾虾，虾虾吃泥沙，鱼虾的排泄物又滋养泥沙。这一现象说明的是：[ ]

A、自然界的食物链；

B、自然界的竞争法则是强者生存；

C、自然界的丰富多彩；

D、自然界存在严重的生态问题。

考点：保护环境、节约资源的基本国策

题型：选择题

阅读短文，选择合适的单词填空。

choose them eay communicate close

    Are you the only child in your family? If so, you are the most important person in your parents'
hearts.  They are the 1_____  people to you in the world.  However, many teenagers like you have
trouble  2_____ with their parents.  They always complain (抱怨) that their parents say too much
instead of listening to what they're thinking.  When they do something wrong, getting away from parents
seems to be the only  3_____. In fact, what your parents do just shows love for you. They love you
more than they love 4_____.  Whenever you need help, they are always there,  standing by you.  Try
to put yourself into their shoes, and you'll understand them 5_____ .

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题型：选择题

咽喉肿胀疼痛，甚则溃烂有黄白脓点，其证名称为

A．疫喉

B．口疳

C．口疮

D．乳蛾

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题型：选择题

陈琳的诗歌中最好的一首是（）。

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(21) 着城市的发展，城市的 (22) 在不断增加，老城市也 (23) 向郊区扩展，古老的房子被高楼大厦所 (24) 。

A．分量
B．重量
C．数量
D．数学

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题型：选择题

在使用Word编辑文档时，选择某一段文字后，按下列哪个键能将这段文字删除？（）

A.Delete

B.Shift

C.Alt

D.Ctrl

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