建筑石膏最突出的技术性质是凝结硬化快，且在硬化时体积略有膨胀。

“小小少年，很少烦恼，眼望四周阳光照。小小少年，很少烦恼，但愿永远这样好。”但步入青春期，烦恼和心理矛盾随之产生，处理不好就会成为我们前进的阻力。因此要[ ]

A．远离青春期的到来

B．少于他人交往

C．主动与人沟通，丰富文化生活

D．努力追求个性化

（）可以保存网页信息。

A.标题栏

B.菜单栏

C.收藏夹

D.地址栏

One day, an old monk named Wisdom, followed by two young monks, was walking from one town to another when they caught sight of a lake. Tired and thirsty, they stopped to have a rest. The old monk, __小题1:__（point）to the lake, asked the younger one to get him some water.

When the little monk reached __小题2:__ lake, a cart drawn by an ox started crossing the lake, 小题3:__ made the water very muddy. The little monk thought, “How can I give this muddy water to my master to drink!” So he came back without any water, saying, “The water is very muddy. I don’t think 小题4:  is suitable to drink.”

After a while, the same monk ___小题5:___ (ask)to get water again. When he went back to the lake, he found that the mud had settled down already, _小题6:___ he collected back a pot of water. Wisdom looked at the water 小题7:  (happy) and then up at the monk, “To make the water clean,小题8:  you need to do is just to let it be and the mud would settle down _小题9:__ its own.”

It is also the same with your mind. When it is disturbed, just let it be. Give it a little time and it will settle down _小题10:___.

如图，子弹从O点水平射出，初速度为v₀，穿过两块竖直放置的薄挡板A和B，留下弹孔C和D，测量C和D的高度差为0.1m，两板间距4m，A板离O点的水平距离为14m，不计挡板和空气的阻力，则v₀=______ m/s （g=10m/s² ）

男性，65岁，冠心病10年。6小时前胸骨后剧痛，为压榨性，并向左臂放射。先后含硝酸甘油4次，疼痛稍减轻，烦躁不安，出汗。查体：急性痛苦面容，体温36．5℃，血压为13．3／9．3kPa（100／70mmHg），脉率110次／分；心界不大，律齐，心音低，未闻奔马律及杂音；双肺少许湿性啰音；肝脾未触及。

于入院后第3天突发剧烈胸痛，端坐呼吸，心脏超声见明显二尖瓣反流。查体时最有诊断意义的体征为（）

A.胸骨左缘中下部收缩期杂音

B.心音遥远，心界增大

C.血压降低，脉压减小

D.心尖区响亮的全收缩期杂音

E.满肺湿性啰音及颈静脉曲张