A：I came here especially for your opinion about my New Year’s pla
B：I’d like to know your opinion about my New Year’s pla
C：The New Year’s plan is to be discussed, but I’d first let you know it
D：To do better our work, I’ve drawn a New Year’s pla
已知烟煤的热值是2.9×107J/kg，那么（ ）
生活处处有物理，留心观察皆学问。厨房中也包含着很多物理知识。如：抽油烟机在工作时，由于转动的扇叶处气体的流速大，压强____ ，从而在周围大气压的作用下将油烟压向扇口排出；高压锅煮饭熟得快是因为高压锅内气压大、水的沸点____ ；洗碗时“油花”漂在水面上，其原因是油的密度比水的密度____ ；在盛水的水缸外表面，夏天常常出现了一层均匀分布的小水珠，这是水蒸气的____ 现象。
阅读短文，从A、B、C、D四个选项中选择最佳答案。
Mr. White and his 1 wanted to do it by decided to paint the outside of their house. To save money they 2. On Saturday morning they bought some paint and two brushes. They began that afternoon 3 the back of the house. The next Saturday 4 went to a football match while his wife painted the 5 of the house. On Sunday they found they couldn't open 6 of the front windows. They got them all 7 in the end. But they 8 three of the seven which were very expensive to repair. Next time 9 10 try to save money, they'll certainly pay to do the work.
“麻雀虽小，五脏俱全。”生物体内存在不同的结构是由于细胞如何变化的结果( )
