用树型结构表示实体类型及实体间联系的数据模型称为______。

阅读短文，选择正确答案。

     An old woman walked into a clothes shop. She asked the salesgirl to let her have a look at a new dress on

display, but the girl stood still behind the counter, taking no notice of the request. The old woman spoke to the

girl again, raising her voice a bit, but still received no answer. The old woman looked closely at the girl and

nodded to her, "I am too old to see well." I can't even tell a plastic (塑料的) model from a real girl."

     On hearing this, the salesgirl shouted at the old woman," What? Did you call me a plastic model?"

     The old woman was greatly surprised."Oh, dear me," she said. "The model can speak. Then it must be a

robot of a new type."

1. The old woman wanted ______ in the clothes shop. [ ]

A. to buy something

B. to play a joke on someone

C. to try things on

2. The assistant was a ______. [ ]

A. woman

B. model

C. robot

3. The assistant took no notice of the old woman because ______. [ ]

A. she was a plastic model

B. she was too old to see well

C. she was not a good assistant

4. The assistant began to speak because _______. [ ]

A. she got to know her mistake

B. she wanted to show that she was not a model

C. she thought the old woman had insulted (侮辱) her

5. When the assistant shouted at her, the old woman was greatly surprised because _______. [ ]

A. she had thought the assistant would speak

B. she didn't expect the assistant would speak

C. she had thought the assistant was a robot

下列各句中，加粗的词语运用正确的一项是[ ]

A、车到华山脚下，一下车，仰望险峻雄奇的山峰，我就心有余悸了。

B、夜凉如风，西风从窗外冷嗖嗖地吹进来，我只穿着一件单衣，但并不觉得寒冷，反之，心里却是热乎乎的。

C、他们夫妻俩因为性格不合，导致感情不合。

D、见这李虞侯、张干办在宋江前面指手划脚，你来我去，都有心要杀这厮，只是碍着宋江一个，不敢下手。

妊娠恶阻又称

A．转胞
B．子病
C．子晕
D．子淋
E．子烦

黄连对心血管系统的作用是（）

A.负性肌力

B.升高血压

C.抗心肌缺血

D.致心律失常

E.收缩血管

八珍汤可用于

A．湿热俱重的黄疸
B．湿重于热的黄疸
C．热重于湿的黄疸
D．寒湿黄疸
E．虚劳发黄