45______
②当滨螺密度长期保持在100～200只/m2时，
A. did B. could C. had D. would
下列关于有机物的正确说法是
The angel then turned to the third man, threw up his hands 73.
膜剂只适合于（ ）。
In the good care of the nurses, the boy isrecovering from his heart operation .
在亚洲新兴市场经济国家订购价不到十美元一双的耐克鞋，在美国等国家的市场上竟然平均要卖到四五十美元。这一现象表明
柳宗元《封建论》载：“时有叛国而无叛郡，秦制之得，亦以明矣。”符合这一论断的历史时期是
I’m tired out. I all afternoon and I don’t seem to have finished anything.
在铁路沿线设置草方格沙障，其主要生态功能是
Mary and I see each other ________,but not as often as we used to.
The new movie to be one of the biggest money-makers of all time.
The new movie to be one of the biggest money-makers of all time.
Which sentence in the text is the closest in meaning to the following one