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听力原文:M: What do you plan to do for Christmas? W: No concrete plan, but I think I'll most likely go skiing in Montana and spend a few days in the mountains doing cross-country skiing. M: I heard you are very good at skiing. Believe it or not, I haven't done any skiing in my life. I wish I could ski just like you. W: Yeah, you could if you gave it a shot. You know, skiing is my love and the only reason I like it so much is because it gives me great pleasure to speed through the snow. M: My parents and I vacationed in Montana National Park when I was little and I remembered we had great time going hiking. Now I feel like going back again. W: Well, since we have two weeks' break for Christmas, you can spend a few days in Montana and I can give you lessons on skiing. That would give you some basics and hopefully you can ski like a professional in a few days. M: Ski like a professional? No way. Actually, you do have a good point. I could spend some time in Montana and head back home for Christmas. Perhaps you could spend Christmas at my place too. My parents would like to meet you. W: That would be great, since my folks will be in Jamaica for Christmas and New Year. M: Oh, I am anxious to learn how to ski. W: And you can bet I will be a very strict instructor. M: No problem. I have been known to be an excellent student during my school year. W: Well, maybe you won't be this time. M: Really? I am looking forward to it now. W: OK. Then, let's wait and see. (4)
A.
The pleasure of skiing.
B.
The Montana National Park.
C.
How to learn to ski.
D.
How to spend the Christmas holiday.
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举一反三
【单选题】克服无线电静区的一般方法什么()
A.
增大发射功率
B.
增大发射频率
C.
降低发射功率
D.
降低发射频率
【判断题】可以在Service中使用TextView等组件美化界面。()
A.
正确
B.
错误
【单选题】下列标号的句子中没有错别字且加点字的读音正确的一项是 ( ) 1 吕洞宾和他的两位朋友倒也还罢了 , 站在 龛 ( l ō ng ) 里的两个小童和柳树精对面的老人 , 实在是少见的传神之作 。 2 一般庙宇的塑像 , 往往不是平板 , 就是怪 诞 ( d à n ) , 造型偶尔美的 , 又不像中国人 , 跟不上这位老人这样逼真、亲切 。 3 无名的雕塑家对年龄和面貌的差异有很深的认识 , 形象...
A.
B.
C.
D.
【单选题】频率容限可以表示为发射的特征频率偏离( )的最大容许偏差。
A.
参考频率
B.
发射占用频带的中心频率
C.
接收本振频率
D.
指配频率
【单选题】雷达接收机的输入信号频率等于____
A.
磁控管发射频率
B.
发射频率加中频
C.
发射频率减中频
D.
脉冲重复频率
【单选题】饥饿或消耗性疾病的患者,蛋白质代谢是处于 ( )
A.
氮平衡
B.
负氮平衡
C.
排出足够的尿素氮
D.
正氮平衡
【单选题】雷达混频器输出信号的频率,等于____。
A.
发射频率与接收频率之差
B.
本振频率与回波频率之差
C.
发射频率与脉冲重复频率之差
D.
发射频率与脉冲重复频率之和
【单选题】二次谐波成像指:
A.
探头接收频率呈发射频率的2倍
B.
探头发射频率呈接收频率的2倍
C.
整倍于基波频率的振动波
D.
低频发射高频接收的波
【简答题】根据词尾和变格法,形容词分为两种,即:________和________。
【单选题】食品危害主要包括生物性的、化学性的和( )。
A.
物理性的
B.
生理性的
C.
生化性的
D.
物化性
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