女，29岁，停经28周，产前超声检查如图，最可能的诊断为() A．胎儿畸形，脑积水

阅读理解。

     I like to get up late, so my ideal school starts at 9 a.m. It finished at 3 p.m., so we will have lots of time

for after-school activities. There is a big dining hall.

     We have an hour for lunch. We eat lunch and chat there. We can also listen to pop music in the hall. We

eat fruit and vegetables every day.

     We have Maths every day because I think Maths is very interesting to us. I love computers, so we have

Computer Studies every day. We wear school uniforms, but we do not wear ties. The classes are quite small.

There are 15 students in each class.

     There is a park on one side of our school and a shopping mall on the other. We have a big library with lots

of useful books. We also have a tennis court and a swimming pool.

     There are lots of clubs and after-school activities. We only have half an hour of homework every day, and

we do not do homework at weekends. Every month, we go on a school trip to a museum or a theater.

1. How many hours for lessons are there in my school?

A. Five hours.

B. Six hours.

C. Four hours.

D. Three hours.

2. How many hours for lunch are there in my school?

A. Half an hours.

B. One hours.

C. One and a half hours.

D. Two hours.

3. Why do we have Maths every day?

A. Because it is useful.

B. Because it is the main subject.

C. Because we're interested in it.

D. Because I'm going to be a Maths teacher.

4. How many students are there in my class?

A. Ten.

B. Sixteen.

C. Fourteen.

D. Fifteen.

5. The underlined word "with" means ______.

A. 用

B. 在……下

C. 和……一起

D. 有

6. How often do we go on a school trip to a museum or a theater?

A. Every week.

B. Every day.

C. Every month.

D. Every two months.

7. What's the best title for the passage? 

A. My school.

B. My ideal subject.

C. My ideal school.

D. My ideal park.

如果1号远端机通过网管检测无回应，但是检测与其连接的近端机时，该远端机光通路正常，一般情况为该远端机（）故障。

A、上行458

B、高频开关

C、电源板

D、检测板

（7分）下表为一台电烤箱的铭牌，其内部简化电路如图所示，R₁和R₂均为电热丝．（不考虑温度对电阻的影响）

则：(1)电烤箱在高温档正常工作15min所消耗的电能是多少焦？

(2)电烤箱在低温档正常工作时R₂的阻值是多少欧？

(3)假设在用电高峰时家庭电路实际电压为198V，电烤箱在高温档的实际功率是多少瓦？

（解答要求：要写出依据的主要公式或变形公式，要有数据代入和运算结果）

男，20岁。全口多数牙龈均有不同程度的充血、水肿，以下前牙牙龈肿胀明显，牙龈呈暗红色，牙颈部可见堆积的软垢和牙石，舌侧较多，触之牙龈易出血，牙无松动，X线片未见异常。

引起该疾病的主要病因是

A．吸烟

B．食物嵌塞

C．软垢与牙石

D．不良的修复体

E．不良的刷牙方法

在设计会计账簿时，应遵循的原则有（）。

A.适应企业规模和特点

B.适应会计报表的要求

C.简明实用，满足业务需要

D.适应公司股东的要求