根据《建筑施工扣件式钢管脚手架安全技术规范》（JGJ130-2011），2.1.5，

单词拼写。

1. Dear Rosemary, thanks for your letter, which took a _________ (两个星期) to arrive.

2. When I was teaching the boys, I sometimes wondered how __________ (相关的) chemistry is to these 

    students after they left school.

3. It was my first visit to a r__________ (偏远的) village, a village as far away as you can imagine.

4. The hut was dark so it took time for our eyes to __________ (适应).

5. Fresh grass had been laid on the floor and there was a newly made __________ (平台) for Jenny and I to

    sleep on.

密接式钩缓装置需要与普通自动车钩连挂时，必须采用（）

在青海省建立的青海湖鸟岛自然保护区，主要保护动物是（   ）

A．金丝猴

B．朱鹮

C．褐马鸡

D．棕头鸥、斑头雁

机会成本不变

男性，40岁，4年来活动时心悸、气短，2个月来有夜间憋醒。查体：血压130/80mmHg，颈静脉无怒张，心界左大，心尖部可闻及舒张期隆隆样杂音。心率80次／分，双肺底未闻及干湿性啰音，肝脾肋下未及，双下肢无水肿。既往20年前有发热、下肢关节红肿。

该患者最可能的心脏病诊断是（）

A.老年退行性心脏瓣膜病

B.风湿性心脏病

C.冠心病

D.扩张型心肌病

E.先天性心脏病