wifi是一种可以将个人电脑、手机等终端设备以无线方式互相连接的技术．常见的连接方式是通过一个无线路由器来实现．无线路由器是通过____ 波向四周有效范围内的终端传递信息．我们从电脑液晶显示屏中看到的五颜六色的画面都是由____ 三种颜色的色光混合而成的．

阅读

我们访问的是陈巴尔虎旗。汽车走了一百五十里，才到达目的地。一百五十里全是草原。再走一百五十里，也还是草原。草原上行车十分洒脱，只要方向不错，怎么走都可以。初入草原，听不见一点儿声音，也看不见什么东西，除了一些忽飞忽落的小鸟。走了许久，远远地望见了一条迂回的明如玻璃的带子——河！牛羊多起来，也看到了马群，隐隐有鞭子的轻响。快了，快到了。忽然，像被一阵风吹来似的，远处的小丘上出现了一群马，马上的男女老少穿着各色的衣裳，群马疾驰，襟飘带舞，像一条彩虹向我们飞来。这是主人来到几十里外欢迎远客。尖刀我们，主人们立刻拨转马头，欢呼着，飞驰着，在汽车左右与前面引路。静寂的草原热闹起来：欢呼声，车声，马蹄声，响成一片。车跟着马飞过小丘，看见了几座蒙古包。

    “What's the matter, Mum?”

    As soon as I entered the door, I found that my mother was not____ (please). It was unusual — she usually____ (open) the door and welcomes me with a smile!

    “She's dying,” Mum said____ (sad). I knew what she said. The tulip (郁金香), my mother's favorite, is dying.

    A month ago, we moved into our new house and Mum____ (buy) a very beautiful tulip in a flower shop. Mum liked it very much. Whenever she was free, she would sit in her armchair beside the tulip and enjoy ____ (it) beautiful colour and nice smell.

    She regarded the tulip as a baby and looked after it carefully. She put the tulip by the window and moved it from one place to another____(give) enough sunshine to it. The first thing she did____ she got up every morning was to water the tulip. Mum also fertilized it many times.

    She hoped that____ great care, the tulip would become more and more beautiful____ the tulip was dying because of too much sunshine, water and fertilizer.

    It's true that mother loved the tulip. But this kind of love must be ____(harm).

    Too much love can sometimes kill what you love.

①orange____     A.

②yellow ____     B.

③green ____     C.