The dam collapsed,flooding an area of five thousand square m

I reached my arms out and she collapsed into my open arms 翻译collapsed的意思伸出,牵起,搀扶 倒下

为什么leave用ing形式,
when the credit markets collapsed in 2007,the leveraged buyout boom abruptly ended,leaving damage.2007年信贷市场***之时,杠杆收购潮迅即结束,留下哀鸿遍野.

单词拼写。

1.A lot of houses collapsed in the earthquake because of u constructions. 2.Floods are not ? u these days;they happen more and more often. 3.Volcanic e and earthquakes have always been a threat in certain parts of the world. 4.Armed c could start at any time.The world is not peaceful at all. 5.Most of the students are in the 17-20 age r . 6.Our team was knocked out in the (半决赛)of the competition. 7.A (灾难性的)fire in the city caused loss of life and money. 8.Motorists should be aware of cyclists and (体贴的)towards them. 9.Water (短缺)is a problem to the city. 10.They were among the first companies to exploit the (潜能)of the Internet.

The first pulsar,or rapidly spinning collapsed star,to be sighted was observed in the summer of 1967 by graduate student JOcelny,but the discovery was not announced until Februry 1968.划分每个逗号分句的句子成分,哪个是主句～插入语～状语 等

18.
Although the first pulsar,or rapidly spinning collapsed star,to be sighted was in the summer of 1967 by graduate student Jocelyn Bell,it had not been announced until February,1968.
(A) Although the first pulsar,or rapidly spinning collapsed star,to be sighted was in the summer of 1967 by graduate student Jocelyn Bell,it had not been announced until February,1968.
(B) Although not announced until February,1968,in the summer of 1967 graduate student Jocelyn Bell observed the first pulsar,or rapidly spinning collapsed star,to be sighted.
(C) Although observed by graduate student Jocelyn Bell in the summer of 1967,the discovery of the first sighted pulsar,or rapidly spinning collapsed star,had not been announced before February,1968.
(D) The first pulsar,or rapidly spinning collapsed star,to be sighted was observed in the summer of 1967 by graduate student Jocelyn Bell,but the discovery was not announced until February,1968.
(E) The first sighted pulsar,or rapidly spinning collapsed star,was not announced until February,1968,while it was observed in the summer of 1967 by graduate student Jocelyn Bell.
21.
Before scientists learned how to make a synthetic growth hormone,removing it painstakingly in small amounts from the pituitary glands of human cadavers.
(A) scientists learned how to make a synthetic growth hormone,removing it painstakingly
(B) scientists had learned about making a synthetic growth hormone,they had to remove it painstakingly
(C) scientists learned how to synthesize the growth hormone,it had to be painstakingly removed
(D) learning how to make a synthetic growth hormone,scientists had to remove it painstakingly
(E) learning how to synthesize the growth hormone,it had to be painstakingly removed by scientists
我选一个C,21D,21 C

It took hours to free the victims from the collapsed buildings.两句怎么翻译.

英语翻译
The old woman's face collapsed a bit more,if that were possible and her hands trembled as she put the can back on the shelf.She shuffled past me toward the door,her torn and dirty clothing barely cover her bent back.
Moment after she left,I rushed out the door with the can of corn,but she is nowhere in sight.For the rest of my shift,the image of the woman haunted me.I had been young,healthy,and smug.she had been old,sick and desperate.Wishing with all my heart that I had acted like a human being rather than a robot,I was saddened to realize how fragile a hold we have on our better instincts.