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【简答题】
The best way of learning a language is using it. The best way of learning English is talking in English as much as possible. Sometimes you'll get your words mixed up(混合) and people will not understand you. Sometimes people will say things too quickly and you can' t understand them. But if you keep your sense of humor(幽默感),you can always have a good laugh at the mistakes you make. Don't be unhappy if people seem to be laughing at your mistakes. It's better for people to laugh at your mistakes than to be angry with you,because they don't understand what you are saying. The most important thing for learning English is:'Don't be afraid of making mistakes because everyone makes mistakes.' 小题1:The writer thinks that the best way for you to learn a language is ____. A.writing B.listening C.using it D.learning grammar 小题2:What should you do in learning English? A.Be careful not to make any mistake. B.Write as quickly as you can. C.Laugh more often. D.Speak English as much as you can. 小题3:When people laugh at your mistakes,you should ____. A.not care B.be happy C.feel worried D.be unhappy 小题4:When you make a mistake,you should ____. A.keep quiet B.keep your sense of humor C.be kind D.get angry 小题5:The story tells us:'_____'. A.Only foolish(愚蠢的) people make mistakes B.Few people make mistakes C.People never make mistakes D.There is no one who doesn't make mistakes
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【简答题】杂交水稻制种
【判断题】当电气设备发生接地故障时,电流就通过接地体向大地作半散开,称为接地电流。
A.
正确
B.
错误
【简答题】第六次实验报告
【单选题】杂交以获得水稻杂交种子的生产过程,称为杂交水稻制种。
A.
恢复系与保持系
B.
不育系与恢复系
C.
不育系与保持系
D.
不育系与自交系
【判断题】在摩擦速度一定时,粘着磨损量随法向力增大而增大。
A.
正确
B.
错误
【多选题】水稻杂交制种隔离的距离一般山区、 丘陵地区制种田要求在 m以上;平原地区制种田要求至少 m以上。
A.
50
B.
100
【简答题】接地电流:当电气设备发生接地故障时通过接地体向大地作( )的电流。
【单选题】接地电流:当电气设备发生接地故障时通过接地体向大地作()的电流。
A.
椭圆形散开
B.
半球形散开
C.
球形散开
D.
正方体散开
【判断题】当电气设备发生接地故障时,电流就通过接地体向大地作半散开,称为接地电流。
A.
正确
B.
错误
【多选题】水稻三系杂交制种安全隔离的方法有( )。
A.
空间隔离
B.
时间隔离
C.
屏障隔离
D.
父本品种隔离
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