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【简答题】
邮包运输保险的责任终止期限是在货物运抵保险单所载明的目的地起算满（ ）天为止。
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举一反三
【单选题】If a mother doesn' t love her child, she will not have a mother' s intuition.
A.
Y
B.
N
C.
NG
【单选题】____ made his mother worried. [ ]
A.
The child was addicted to playing computer games
B.
The child's being addicted to playing computer games
C.
The child's being addicted to play computer games
D.
The child addicted to playing computer games
【单选题】What is the correlation between the mother's age and the time when the child develops insulin-dependent diabetes?
A.
The younger the mother, the earlier the start of diabetes in the child.
B.
The older the mother, the earlier the start of diabetes in the child.
C.
The older the mother, the later the start of diabetes in the child.
D.
The mother's age has little to do with the time when the child develops insulin-dependent diabetes.
【简答题】下列有关元素周期表中的某些推断正确的是 A 位于同一主族的元素的价电子数相同，则各元素的常见化合价也一定相同 B 碱金属族元素同卤族元素一样，其单质的熔沸点随元素原子序数的增大而逐渐升高 C 若x是ⅡB族中元素的原子序数, 那么原子序数为x+1的元素是ⅢA族 D 在周期表中金属和非金属元素的分界线附近的元素是过渡元素
【单选题】下列有关卤代烃的叙述正确的是（ ）
A.
CHΡClΡ有 和 两种结构
B.
氯乙烯只有一种结构，而1，2-二氯乙烯有两种结构
C.
检验溴乙烷中的溴元素可将其与过量NaOH水溶液共热充分反应后，再滴入AgNO溶液，可观察到浅黄色沉淀生成
D.
溴乙烷与NaOH的乙醇溶液共热发生灌去反应时，乙醇的作用是催化剂
【单选题】When the author was a child, how did he feel about his mother’s coldness?
A.
He wished his mother were different.
B.
He didn’t let it bother him.
C.
He tried to change their lives.
D.
He wondered if the woman was really his mother.
【单选题】已知金属钠与两种卤族元素形成的化合物 Q 、 P ,它们的晶格能分别为 923 kJ·mol - 1 、 786 kJ·mol - 1 ,下列有关说法中不正确的是 ( )
A.
Q 的熔点比 P 的高
B.
若 P 是 NaCl ，则 Q 一定是 NaF
C.
Q 中成键离子间距比 P 的小
D.
若 P 是 NaCl ，则 Q 可能是 NaBr
【单选题】卤素单质及化合物在许多性质上都存在着递变规律。下列有关说法正确的是
A.
卤化银的颜色按AgCl、AgBr、AgI 的顺序依次加深
B.
卤化氢的键长按H—F、H—C1、H—Br、H—I的顺序依次减小
C.
卤化氢的还原性按HF、HCl、HBr、HI的顺序依次减弱
D.
卤素单质与氢气化合按F2、Cl2、Br2、I2的顺序由难变易
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