病原微生物在一定条件下，突破机体的防御机能，侵入机体，在一定部位定居、生长繁殖，并引起不同程度的病理反应的过程就称之为（）。
参考答案：感染或传染
单词拼写
1．Those delicious foods are especially ________(令人垂涎的)when someone is hungry.
2．There is a growing t________ towards smaller families.
3．The teacher asked us to make a ________(评论)on the film.
4．The people of the village held parties to celebrate another a________ harvest.
5．There were some ________(人造的)flowers on the table.
6．He was found stealing，and as a c________，he lost his job.
7．Any kind of energy can be t________ into electricity.
8．The shop ordered a great deal of goods to meet the ________(要求)of consumers.
快速列车是指由新型提速机车牵引，新型提速车辆编组，经过提速地段最高速度（）km/h的旅客列车。
A.90
B.100
C.120
D.140
