单项选择题M:My tooth is aching badly,Doctor.Would you please have a look?W:Yes.Open your mouth,please.Your X-rays show a deep cavity.M:Will you have to pull the tooth?W:Not necessary.But you will need a filling.M:Will it hurt much?W:I’ll give you an injection,and then you won’t feel pain.And you should really take better care of your teeth.What’s wrong with the man?()
A.He has been throwing up.B.He has got a heavy toothache.C.He seems weak.
判断题华硕(ASUS)Z97-A主板上集成声卡支持7.1或5.1声道。
未分类题听力原文:M: I'd like to get a haircut.W: How do you like your haircut?M: Cut it short in the back, and part it in the middle.W: Would you like a shampoo?M: No, thanks. But I'd like a shave.W: Ok. I understand.How does the man like his haircut?A.Cut it short in the back.B.Part it in the middle.C.Both A and B.
未分类题依次填入下列划横线部分最恰当的一组是 ① 目前对于地球磁场的变化和倒转提出了不少理论或模型, 基本上都处在假设和推测的阶段,并没有一个十分成熟的理论。 ②在评价标准上, 看数字, 不能只看数字,要防止“干部出数字”、“数字出干部”的现象。 ③汪曾祺先生终生主要从事创作,即使偶尔也写些评论,甚至这些评论可以归入学术论文一类, 总的说来,他天生就是一个作家, 很难算是一个纯粹的学者。 A.即使 也 虽然 但是 但 而 B.即使 也 既 又 不过 也 C.尽管 但 虽然 但是 不过 也 D.尽管 但 既 又 但 而
单项选择题如果不变投入的成本上升,则( )。 A.平均成本曲线和边际成本曲线下移 B.边际成本曲线和边际成本曲线上移 C.边际成本曲线上移,平均成本曲线不变 D.平均成本曲线上移,边际成本曲线不变