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【简答题】
Never give out identifying information such as Name, Home Address, School name, or Telephone Number in a public message such as at a chat room or on bulletin bards. Never send a person a picture of you without first checking with your parents or guardian. ● Never respond to messages or bulletin board items that are: Suggestive / Obscene / Belligerent / Threatening / Make You Feel Uncomfortable. ● Be careful when someone offers you something for nothing, such as gifts and money. Be very careful about any offers that involve your coming to a meeting or having someone visit your house. ● Tell your parents or guardian right away if you come across any information that makes you feel uncomfortable. ● Never arrange a face-to-face meeting without telling your parents or guardian. If your parents or guardian agree to the meeting, make sure that you meet in a public place and have a parent or guardian with you. ● Remember that people online may not be who they seem. Because you can’t see or even hear the person, it would be easy for someone to misrepresent him or herself. Thus, someone indicating that“she”is a“12-year-old-girl”could in reality be an older man. ● Be sure that you are dealing with someone that you and your parents know and trust before giving out any personal information about yourself via E-mail. ● Get to know your“online friends”just as you get to know all of your other friends. 小题1:We can infer from the passage that . A.it is not safe to surf the internet B.people now are no longer honest C.we can chat with unfamiliar people online D.people online are not who they are 小题2:Which of the following is right according to the passage? A.People online never tell their friends their real names. B.You can often get something free from the internet. C.Your friends online may want to meet you. D.Online friends are not friends at all. 小题3:What is the main idea of the passage? A.How to surf the internet. B.Kids shouldn’t surf the internet. C.How to choose online friends. D.How to protect yourselves online.
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A.
无人靶机
B.
预编程序控制无人侦察机
C.
指令遥控无人侦察机
D.
复合控制的多用途无人飞器
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A.
心率加快
B.
心肌肥大
C.
肌源性扩张
D.
红细胞增多
E.
血流重新分布
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A.
韧性
B.
耐腐蚀性
C.
导电性
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A.
体重过低
B.
正常
C.
肥胖前期
D.
轻度肥胖
E.
中度肥胖
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A.
硬度
B.
铸造性能
C.
密度
D.
熔点
【单选题】小明身高为172cm,体重为72kg,那么参照中国评判标准,小明属于
A.
体重过低
B.
正常
C.
肥胖前期
D.
轻度肥胖
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A.
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B.
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D.
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A.
大于
B.
小于
C.
等于
D.
以上都正确
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A.
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B.
错误
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A.
密度
B.
熔点
C.
导电性
D.
抗氧化性
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