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【判断题】
所有的PVC制品都需要加增塑剂。
A.
正确
B.
错误
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举一反三
【单选题】2004年5月央视《每周质量日报》报道,市场上发现假冒的2B铅笔.下列说法错误的是(  )
A.
铅笔芯中含有石墨
B.
铅笔芯是用铅做的
C.
2B铅笔芯可以导电
D.
铅笔芯在氧气中灼烧能生成C0 2
【简答题】Florence Nightingale was born on May 12th, 1820 in Florence, Italy. She was born to a wealthy and well-educated English family. When she was young she became interested in (对......感兴趣) caring for(照顾) ...
【单选题】-What do you think made Jane’s parents so disappointed? -____________.
A.
She refused to live with them
B.
Her refusing to live with them
C.
Because she refused to live with them
D.
Since she refused to live with them
【简答题】风行一时的歌曲
【单选题】CPU与其它部件之间的联系是通过( )实现的。
A.
控制总线
B.
地址总线
C.
数据总线
D.
数据、地址和控制总线三者
【多选题】图是汽车尾气中有毒气体转变为无毒气体的微观示意图.图中不同的圆球代表不同原子.下列说法错误的是(  )
A.
反应前后原子的种类、数目均无变化
B.
此反应属于分解反应
C.
反应中有单质生成
D.
参加反应的两种分子的个数比为2:3
【单选题】——What made the little so upset? —— .
A.
She got separated from her parents
B.
Because she had lost her way
C.
Being too frightened
D.
Not allowed to watch TV
【多选题】已知反应前后分子变化的微观示意图如下所示.下列说法错误的是(  )
A.
此反应为中和反应
B.
A是有机物,B、C、D是无机物
C.
点燃前,要先检验A的纯度,防止爆炸
D.
化学方程式CH 4 +2O 2 点燃 . CO 2 +2H 2 O
【单选题】下图表示治理汽车尾气所涉及反应的微观过程.下列说法错误的是(  )
A.
图中单质的化学式为N 2
B.
该反应使有毒气体转化为无毒气体
C.
反应物都属于氧化物
D.
反应前后原子、分子个数都不变
【单选题】Alice was so happy that her boyfriend ______ with her parents.
A.
went on well
B.
deserved high
C.
gave the thumbs-up
D.
made a hit
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