由于网络钓鱼通常利用垃圾邮件进行传播,因此,各种反垃圾邮件的技术也都可以用来反网络钓鱼。
参考答案:对
下图是某校的天文观测小组某日进行实地测量得到的资料:当校园内的影子最短时,北京时间是13时,夜晚精确测得地平线与北极星之间的夹角为25°,据此回答两题:
(10学校所在地的地理坐标是 ( )
A.25°N、135°E B.25°N、105°E
C.65°N、135°E D.65°N、105°E
(2)该日(观测当日),当校园内旗杆的影子最短时,属于该日的地区占全球的比例大约是( )
A.9/24 B.15/24 C.17/24 D.7/24
句型转换,按括号内的要求转换下列句型,每空一词。
1. Sometimes you're supposed to come early. (改为否定句)
Sometimes you supposed to come early.
2. Mrs.Smith is busy. She is doing her housework now.
Mrs.Smith is her housework now.
3. Tom visits his grandparents once a week. (对划线部分提问)
does Tom visits his grandparents?
4. My pen pal is from America. (用Japan改为选择疑问句)
Is your pen pal is from America ?
5. The teacher said, "Don't cheat in exams, children!"
The teacher told the children cheat in exams.