搜题请搜索小程序“爱下问搜题”
问题 单项选择题

传染源一般包括（）。

A.病人

B.病人、病原携带者

C.病人、病原携带者、受感染动物

D.病人、病原携带者、受感染动物、易感人群

E.病人、病原携带者、受感染动物、易感人群、易感动物

答案

参考答案：C

听力题

根据短文内容和首字母提示，在下文空格处填入适当的词使短文完整。在答题卡标有题号的横线上，完整写出空缺处所填单词的正确形式。（每空一词,5分）

The Internet has become part of people’s life. A report s 小题1: that 38% of the students often use the Internet. Most of them get useful i 小题2:  and use the Internet to help their studies. But many students don’t use it in a good way. Some p 小题3: games too much, some visit websites they should not look at. So bad things may happen if students s 小题4: too much time on the Internet.

It’s important for students to use the Internet in a good w 小题5: . Now we have textbooks which use many examples to teach students how to u 小题6: the Internet well. They give useful advice, such as it's good to r 小题7:  news or find helpful information to study.

Some students also m小题8: friends on the Internet. But if you want to have a face-to-face meeting w 小题9:  your online friends, let your parents know and meet in a s 小题10:  place.
查看答案
多项选择题

特别付款包括______。

A．期前付款

B．期后付款

C．期中付款

D．部分付款
查看答案