吸虫的生活史特点是 - 查题网

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高等继续教育 / 人体寄生虫学

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题型描述: 多选题
吸虫的生活史特点是
A.与水关系密切
B.有保虫宿主
C.需要中间宿主
D.发育过程均经蜕皮
E.第一中间宿主多是淡水螺

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人体寄生虫学

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4[填空题] As more states require high school students to pass competence exams before graduating, evidence suggests that cheating among students is _1_ the rise. Many educators are concerned _2_ dishonest behavior among examinees, and have _3_ a number of campaign to control cheating. In spite of their efforts, however, cheating seems to be increasingly _4_ among students in both high schools and universities. Numerous arguments have been made about the cause of this widespread problem. Some experts believe it is _5_ to changes in American society as a whole since, _6_ earlier times, modern America is largely a nation of strangers. _7_, moral values are not taught or reinforced as they were in “the good old days”. Many educators feel that as students gain confidence _8_ themselves and their abilities, they are _9_ likely to cheat. Surprisingly, some efforts to prevent cheating may actually _10_ cheating. 1. A. in B. at C. on D. to 2. A. about B. for C. to D. in 3. A. carried B. began C. formed D. launched 4. A. contagious B. appeared C. showed D. found 5. A. focused B. bound C. linked D. contrary 6. A. Like B. Unlike C. As D. At 7. A. But B. Nevertheless C. Because D. Additionally 8. A. to B. in C. for D. at 9. A. more B. much C. less D. most 10. A. encourage B. discourage C. approve D. disapprove大学英语(二)

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