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【单选题】
艾滋病是人体感染了艾滋病病毒（HIV）所导致的传染病。下列有关叙述正确的是
A.
艾滋病的病原体是HIV，艾滋病的传染源是艾滋病病毒
B.
艾滋病的传播途径主要是接触传播、性传播、母婴传播
C.
目前预防艾滋病采取的普遍措施是接种预防艾滋病的疫苗
D.
HIV攻击和杀伤人体内的免疫细胞，使人体的免疫功能缺损
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举一反三
【单选题】Father often tells me——too much time on computer games.
A.
don’t spend   
B.
not spend   
C.
not to spend
D.
not spending
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【单选题】The way that people spend their money, and the objects on which they spend it, are the last areas where free choice and individuality can be expressed. The choice reflects personal taste, the way peop...
A.
imagine
B.
possess
C.
have
D.
own
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【单选题】The teacher often tells us _____ much time _____ TV. [     ]
A.
not to spend, watch
B.
to not spend, watching
C.
not to spend, watching
D.
don't spend, watch
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【单选题】The way that people spend their money, and the objects on which they spend it, are the last areas where free choice and individuality can be expressed. The choice reflects personal taste, the way peop...
A.
imagine
B.
possess
C.
have
D.
own
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【简答题】请找出该可行性研究报告存在哪些问题。 吸发式电推剪生产可行性研究报告 一、国际国内理发业目前使用的电推剪的缺点 据初步调查,国际(亚洲如韩国和日本、美洲如美国、欧洲如意大利、中东如以色列等)国内理发业目前广泛使用的电推剪在进行理发作业时,存在如下缺点:第一,被剪断的发屑以及头屑会散落飞到人们的头上、脸上、子里、衣服上、理发座椅及其附近地面上,同样会散落或飞溅到理发人员的脸上、双手和衣服上,不仅令人...
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【单选题】电池反应 2H2（g）+O2(g)→2H2O(l) E1 H2（g）+1/2O2(g)→H2O(L) E2则有：( )
A.
E 1 =1/2E 2
B.
E 1 =E 2
C.
E 1 =2E 2
D.
不能确定
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【单选题】The way that people spend their money, and the objects on which they spend it, are the last【C1】______ where free choice and individuality can be expressed. The【C2】______ reflects personal taste, the w...
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areas
B.
regions
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spots
D.
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【简答题】As to the time youngsters spend on electronic devices, they spend __________ hours a day altogether. [A] 6.5 [B] 7.5 [C] 9.5 [D] 11
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【简答题】已知下列反应： (1)2H 2 O 2 (1)→2H 2 O(1)+O 2 (g) =-196.1kJ·mol -1 (2)H 2 O(1)→H 2 O(g) =44.01kJ·mol -1 求：(1)180gH 2 O 2 (l)分解的反应焓变△ r H Θ ? (2)反应H 2 O 2 (l)→H 2 O(l)+1/2O 2 (g)的 ? (3)反应2H 2 O(l)+O 2 (g)→2H 2...
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【单选题】How people spend their nights according to the text?
A.
People could spend their nights anywhere whether it was their home or not.
B.
People only served their friends to spend their nights at home.
C.
People had to return to their home whether they were far away or not.
D.
Strange people had to spend their nights in the field when it got dark.
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相关题目：
【单选题】Father often tells me——too much time on computer games.
A.
don’t spend   
B.
not spend   
C.
not to spend
D.
not spending
查看完整题目与答案
【单选题】The way that people spend their money, and the objects on which they spend it, are the last areas where free choice and individuality can be expressed. The choice reflects personal taste, the way peop...
A.
imagine
B.
possess
C.
have
D.
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查看完整题目与答案
【单选题】The teacher often tells us _____ much time _____ TV. [     ]
A.
not to spend, watch
B.
to not spend, watching
C.
not to spend, watching
D.
don't spend, watch
查看完整题目与答案
【单选题】The way that people spend their money, and the objects on which they spend it, are the last areas where free choice and individuality can be expressed. The choice reflects personal taste, the way peop...
A.
imagine
B.
possess
C.
have
D.
own
查看完整题目与答案
【简答题】请找出该可行性研究报告存在哪些问题。 吸发式电推剪生产可行性研究报告 一、国际国内理发业目前使用的电推剪的缺点 据初步调查,国际(亚洲如韩国和日本、美洲如美国、欧洲如意大利、中东如以色列等)国内理发业目前广泛使用的电推剪在进行理发作业时,存在如下缺点:第一,被剪断的发屑以及头屑会散落飞到人们的头上、脸上、子里、衣服上、理发座椅及其附近地面上,同样会散落或飞溅到理发人员的脸上、双手和衣服上,不仅令人...
查看完整题目与答案
【单选题】电池反应 2H2（g）+O2(g)→2H2O(l) E1 H2（g）+1/2O2(g)→H2O(L) E2则有：( )
A.
E 1 =1/2E 2
B.
E 1 =E 2
C.
E 1 =2E 2
D.
不能确定
查看完整题目与答案
【单选题】The way that people spend their money, and the objects on which they spend it, are the last【C1】______ where free choice and individuality can be expressed. The【C2】______ reflects personal taste, the w...
A.
areas
B.
regions
C.
spots
D.
places
查看完整题目与答案
【简答题】As to the time youngsters spend on electronic devices, they spend __________ hours a day altogether. [A] 6.5 [B] 7.5 [C] 9.5 [D] 11
查看完整题目与答案
【简答题】已知下列反应： (1)2H 2 O 2 (1)→2H 2 O(1)+O 2 (g) =-196.1kJ·mol -1 (2)H 2 O(1)→H 2 O(g) =44.01kJ·mol -1 求：(1)180gH 2 O 2 (l)分解的反应焓变△ r H Θ ? (2)反应H 2 O 2 (l)→H 2 O(l)+1/2O 2 (g)的 ? (3)反应2H 2 O(l)+O 2 (g)→2H 2...
查看完整题目与答案
【单选题】How people spend their nights according to the text?
A.
People could spend their nights anywhere whether it was their home or not.
B.
People only served their friends to spend their nights at home.
C.
People had to return to their home whether they were far away or not.
D.
Strange people had to spend their nights in the field when it got dark.
查看完整题目与答案