【单选题】下列有关金属键的叙述错误的是( )。
B.
金属键是金属阳离子和自由电子之间存在的强烈的静电吸引作用
【简答题】Whar percentage of student job seekers have found a job by now? 查看材料 A.20% B.22% C.50%
【单选题】Whar are the features of an active character ?
A.
growing and developing
【单选题】选出正确答语 Whar's the rate for a standard room?
A.
Three nights until Sunday.
B.
300 yuan a night, including breakfast.
【简答题】Whar are the three basic principles to decide on a research topic?