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【单选题】
某猪场猪突然发病，传播迅速，病猪跛行明显，表现蹄壳变形或脱落，卧地不能站立。部分猪鼻镜、吻突、乳房等处皮肤出现大小不一的水疱，水疱很快破溃，露出边缘整齐的暗红色糜烂面，形成烂斑，死亡率较低。剖检死亡猪见心包膜有弥散性出血点，心肌切面有灰白色或暗黄色斑点或条纹。我国对该病猪群采取的措施是()A.
隔离条件下治疗
B.
扑杀
C.
消毒
D.
抗病毒药物治疗
E.
干扰素注射
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【单选题】Tips 1. Save little and often. 2. Keep a sending and saving diary. 3. Save towards a special goal. . ( )14. The above tips are about how to ______.
A.
protect the environment
B.
team up with others
C.
keep a diary
D.
save money
【单选题】This is an alarming realization as natural resources and the environment are being degraded and ______ at a record pace.
A.
wasted
B.
reconstructed
C.
destructed
D.
reversed
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【简答题】When there is too much smoke in the room, the devise would automatically turn on the alarming system.( )
【简答题】Watch the video clip again and tick (√) the correctanswer to complete each sentence. 1. ( ) Benjamin majored in at university. ☐ A. marketing ☐ B. international trade ☐ C. accounting 2.( ) Benja...
【简答题】The population ________ (increase) at an alarming speed for the past 20 years.
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