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问题 单项选择题

根据《通用硅酸盐水泥》（GB175），关于六大常用水泥凝结时间的说法，正确的是（）。

A.初凝时间均不得短于40min

B.硅酸盐水泥终凝时间不得长于6.5h

C.普通硅酸盐水泥的终凝时间不得长于12h

D.除硅酸盐水泥外的其他五类水泥的终凝时间不得长于12h

答案

参考答案：B

单项选择题 共用题干题

心肌病分为4型，即扩张型心肌病、肥厚型心肌病、限制型心肌病和致心律失常型右室心肌病，各类型心肌病都有各自的病理生理特点。

扩张型心肌病的病理生理特点是（）

A.右心室进行性纤维脂肪变

B.左心室或双心室扩张，收缩功能障碍

C.左心室扩张，双心室扩张，容积减小

D.收缩正常，心壁不厚，单心室舒张功能低下

E.左心室或双心室肥厚，常伴有非对称性室间隔肥厚
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单项选择题

One day while a girl was walking in the woods she found two starving songbirds. She took them home and put them in a small (31) . She cared for them and felt great love for them.

Once the (32) and per of the two birds flew from the cage. Therefore, (33) he flew close, she grasped him (34) . She felt glad, but suddenly she felt the bird go limp. She opened her hand and (35) in horror at the dead bird.

She noticed the other bird moving back and forth on the edge of the cage. She could feel his great need for (36) . She lifted him from the cage and (37) him softly into the air. The bird circled once, twice, three times.

The girl watched delightedly at the bird’ s enjoyment. Her heart was no longer (38) with her loss. Suddenly the bird flew closer and (39) softly on her shoulder. It sang the sweetest melody that she had ever heard.

The fastest way to (40) love is to hold on it too tightly, while the best way to keep love is to give it WINGS!

38（）

A.packed 

B.concerned 

C.marked 

D.lined
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