圆盘给料机按其传动机构封闭量不同，分为哪两种？

地理信息公共服务平台体系层次中，平台门户网站属于（）。

A、运行支撑层

B、数据层

C、应用层

D、服务层

心功能不全肺淤血时，在痰中出现的是（）

A.白细胞

B.夏科-雷登结晶体

C.上皮细胞

D.色素细胞

E.杜什曼螺旋体

Many students have hobbies, such as reading, painting, growing vegetables in their gardens, and looking after animals. Some hobbies are relaxing and (16) are creative. Hobbies can develop your interests and help you learn new skills.
David Smith is a student, and his hobby is writing. (17) the sumer of 2000, he spent four weeks on a summer camp. As well as the usual activities, such as sailing, climbing and mountain biking, there was a writing workshop with a professional (18) "She asked us to imagine that we were in a story. Then we wrote about our (19) at the camp. "
In senior high school David wrote a story about teenage life, and it (20) as a book in 2003. Many teenagers love his book, and as a result, David has become a (21) young writer.
David has been very lucky (22) his hobby has brought him enjoyment and success, but he is (23) interested in many other things. "I like playing volleyball, too" says David. "I spend some of my free time playing volleyball for my school team. (24) I’ll write more books in the future, but I’m not sure. "
It’s sometimes difficult (25) that we shouldn’t spend all our time on our favourite hobby. There are many other interesting things to do in life, and we should try to do something new or different.

Ⅱ. 完形填空/Cloze

A．remember

B．remembers

C．remembered

D．to remember

孕妇，28岁，孕1产0孕24周5d，实验室检查无明显异常。孕妇及胎儿肾超声所见如下图。

可确诊该疾病的方法是（）。

A.CT或MRI检查

B.羊水穿刺染色体检查

C.脐带血穿刺染色体检查

D.胎儿肾功能测定

E.羊水或脐血多囊肾基因检查

试述贸易乘数理论。