All students need to have good study habits(习惯) .When you have good study habits, you learn things quickly. You also remember t   小题1:    easily.

Do you like s___小题2:____ in the living room? This is not a good place because it is u______小题3:_____ too noisy（吵闹）. You need to study in a quiet place, like your b_____小题4:_______. A quiet place will h_____小题5:______ you only think a______小题6:______ one thing, and you will learn b____小题7:_________.

When you study, don’t think about o___小题8:_____ things at the same time. Only think about your homework. If you do this, you will do your homework more quickly and you will make fewer mistakes.

B_____小题9:_____ you begin to study, do not forget to clean your desk. A good desk lamp is important, too. You will f_____小题10:_____tired easily if there is not enough light.

Good study habits are very important. If you do not have them, try to learn them. If you are already good, try to make them better.

图中甲为某火箭发射场，乙为山区，丙为城市，发射场正在进行火箭发射试验．该火箭起飞时质量m=4.60×10⁵Kg，竖直向上起飞的推力F=5.88×10⁶N，请你求出该火箭起飞时所受的合力．（不计空气阻力，g=10N/Kg）