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【判断题】
词汇的总的发展趋势是词语越来越多。()
A.
正确
B.
错误
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参考答案:
举一反三
【简答题】A.He has a headache. B.He failed his history exam. C.He is sleepy. D.He is too busy.
【判断题】车轮内侧外缘凸起的部分叫轮缘,它的主要作用是防止脱轨。
A.
正确
B.
错误
【单选题】以下不属于化工单元操作的是 。
A.
流体输送
B.
精馏
C.
传热
D.
发酵
【单选题】A) He has just too many things to attend to. B) He has been overworked recently. C) He has a difficult decision to make. D) He has just quarreled with his girlfriend.
A.
B.
C.
D.
D
【判断题】完全图K 4 的所有非同构的生成子图中,4条边的有4个.
A.
正确
B.
错误
【单选题】He has too ______ a nature to get angry, even if he has good cause.
A.
slight
B.
mild
C.
light
D.
loose
【简答题】(14分)已知A、B、C、D、E、F是短周期中的6种非金属元素,它们的原子序数依次增大。A元素是周期表中半径最小的元素, B原子的最外层上有4个电子;C与D在周期表中处于相邻的位置,D的阴离子和E的阳离子具有相同的电子层结构,两元素的单质反应,生成一种淡黄色的固体Y;F的L层电子数等于K、M两个电子层上电子数之和 (1)请写出元素符号: A B C D E F (2)画出F的阴离子的结构示意图 (...
【单选题】What is the man's problem?
A.
He hasn't received an important report.
B.
He has too many expenses.
C.
He cannot contact the courier.
D.
He missed a deadline.
【简答题】A.He has a headache. B.He failed his history exam. C.He is tired. D.He is too busy.
【单选题】完全图K 4 的所有非同构的生成子图中,有几个是3条边的
A.
1个
B.
3个
C.
4个
D.
2个
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