依那普利常见的不良反应是（） A.血管神经性水肿 B.男子女性型 * * C.体位性低血

What would happen if you tried to blow a soap bubble in freezing weather? Would it freeze solid(固体) and fall to the ground? Would you have to hit it to break it? These questions happened to me on a cold winter day. It was too cold to play in the snow, but it was a perfect time to experiment with blowing frozen bubbles.

To blow frozen bubbles, I used dishwashing soap and a drop of glycerin（甘油） to make it even better. I chose a place out of the wind, and blew bubbles the same way I always do. I watched to see what would happen. Here’s what I learned.

If the temperature is low enough, the skin of the bubbles frosts over (结霜), becoming cloudy instead of clear. And what about those rainbow swirls（旋转） you see in soap bubbles? The rainbow colors stay even when the bubbles frost, but they don’t swirl anymore. The bubbles still stay in the air. They don’t fall to the ground any faster than they would on a warm summer day.

When these frozen bubbles break, they don’t turn into small water drops as summer bubbles do. They turn into flashing rainbow confetti（碎屑） and move slowly to the ground. Sometimes a frozen bubble will roll across the snow without breaking. If nothing disturbs the bubble, it may stay there for a long time. Sometimes I could catch a bubble and hold it until the heat of my hand made it pop.

I learned another thing about blowing frozen bubbles. It’s so interesting that I want to try it again next year.

小题1:It is the perfect time to blow frozen bubbles on a ___________day.

A．cold winter

B．warm spring

C．hot summer

D．sunny autumn小题2:When the frozen bubbles break, _________.

A．they make a big sound

B．they turn into small drops

C．they fall to the ground like rain

D．they become rainbow confetti小题3:The purpose of the passage is _______.

A．to learn how to do a science experiment

B．to show the experiment of blowing frozen bubbles

C．to discover games that are fun to play in the snow

D．to invent a new kind of soap that makes stronger bubbles

小亮在上午8时、9时30分、10时、12时四次到阳光下观察向日葵的头茎随太阳转动的情况，他发现这四个时刻向日葵影子的长度各不相同，那么影子最长的时刻为[ ]

A.上午12时

B.上午10时

C.上午9时30分

D.上午8时

36岁的周欣家住山东农村，因小儿麻痹症四肢残疾，后义因没有及时治疗而导致脚踝以下截肢。家中连续发生变故而债台高筑，周欣是家中长子，因为残疾非但不能分担家中负担，反而要家人照顾，内心感到十分愧疚。十多年前，周欣瞒着家人拜托同乡把他带到上海，利用残疾的身躯博得众人同情行乞维持生计，并将积余的钱寄回家中还债。社会工作者对周欣反复进行过11次救助，帮助安置他的食宿起居，但他还是一次次重蹈覆辙。作为社会工作者，你能看到周欣身上有什么优点和长处( )

A．改变现状的勇气

B．豁达

C．有责任感

D．独立精神

E．合作精神

全面预算的最终反映是一整套预计的财务报表和其他附表。

由于改革开放和社会经济发展带来的城乡人口大规模流动，城乡分割的二元结构已经从根本上得到了改变。( )