【单选题】下列叙述正确的是( )
A.
除零族元素外,短周期元素的最高化合价在数值上都等于该元素所属的族序数
B.
晶体中有阴离子则必然有阳离子,有阳离子一定有阴离子
C.
A、B为同族上下相邻元素,已知A所在周期有m种元素,B所在周期有n种元素,A的原子序数为x.则B的原子序数为x+m
D.
乙醇的沸点比乙醛高,主要是因为乙醇分子间存在氢键,乙醛分子间不能形成氢键
【单选题】位于子宫肌层内,占总数60%~70%的子宫肌瘤类型为
【简答题】Parents are often upset when their children praise the homes of their friends and regard it as a slur on their own cooking, or cleaning, or furniture, and often are foolish enough to let the adolescen...
【单选题】For the Chinese, “No” sometimes doesn’t mean no. which is the best explanation of the above statement?
A.
A forced kindness deserves no thanks.
B.
When guests refuse to take, we often stop offering drinks and food.
C.
“No” means people don’t like to be pressed.
D.
“No” is a polite remark. If the host just brings the food or drink and ignores the “no”, people will still accept it.
【简答题】有一待估宗地甲需评估,现搜集到与待估宗地条件类似的 4宗地A、B、C、D,具体情况如下表。 成 交 价 单位:元/ m2 宗地 成交价 交易时间 交易情况 容积率 区域因素 个别因素 甲 2009.1 0 1.2 0 0 A 800 2008.1 +2% 1.3 l% 0 B 850 2009.1 +1% 1.4 0 +1% C 760 2008.1 0 1.1 0 -2% D 780 2008....
【简答题】The room is in a terrible mess it _______ cleaned. A. can’t have been B. couldn’t be C. may have been D. would be