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【简答题】
免疫的三大功能包括____、____和____。
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参考答案:
举一反三
【简答题】Everyone talks about the greenhouse effect(温室效应) and how our Earth and its climate are being affected. We can do a science experiment designed by some kids to show this effect and what is happening to...
【单选题】Rh血型系统抗原性最强的抗原是:
A.
C抗原
B.
c抗原
C.
D抗原
D.
d抗原
E.
E抗原
【简答题】单词拼写:根据句意及首字母完成下列各句(10分)。 小题1:I’m l____(大声的) than the other kids in my class. 小题2:Although the little girl is only three years old,she speaks c______( 清晰地). 小题3: You can buy this bike c_____( 便宜) beca...
【单选题】Did you have fun _ last week? [     ]
A.
camp
B.
to camp
C.
camping
D.
campcd
【判断题】公众号可以采用课程分销的形式变现,也就是为各类培训机构提供在线课程分销渠道。
A.
正确
B.
错误
【单选题】Did you have fun___in the river? [     ]
A.
swim
B.
swimming
C.
to swim
D.
swam
【单选题】Did you have fun in the rain last Sunday? [     ]
A.
camp
B.
camping
C.
camped
D.
to camp
【单选题】尼龙-66是哪两种物质的缩聚物( )
A.
尿素和甲醛
B.
己二酸和己二胺
C.
氯乙烯和乙烯醇
D.
苯酚和甲醛
【判断题】当采用W、C等热阴极材料作为阴极时,其导电机构一定是热发射型
A.
正确
B.
错误
【简答题】用所给单词的适当形式填空。 1. I want _________ (join) the art club. 2. Mr Wang helps kids with _________ (swim). 3. —Can you sing? —No, I _________ (can). 4. Can you _________ (speak) English? 5. Can you play it _...
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