“嫦娥二号”于2010年10月1日18时59分57秒在西昌卫星发射中心成功发射，如图所示，“嫦娥二号”从地球发射后经A处进入地月转移轨道，在B处进入绕月工作轨道。已知绕月工作轨道的半径为r，周期为T，万有引力常量为G。下列说法中正确的是
A．根据题中条件可以算出月球质量
B．“嫦娥二号”在B处由地月转移轨道需加速才能进入工作轨道
C．根据题中条件可以算出“嫦娥二号”在B处受到的月球引力大小
D．根据题中条件可以算出“嫦娥二号”在工作轨道上运行时的加速度
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| A beautiful girl was shopping with her mother in Blue-sky Market. It was 1 hard outside. Many people all stood there under the awning (遮雨篷). They waited, some patiently,others impatiently because of the bad weather. The girl's 2 was so sweet. "Mom, let's run through the rain,"she said suddenly. "What?" Mom asked. "Let's run through the rain!" "No, Honey. We'll 3 until it slows down a bit," Mom replied. The child waited about another. 4 and repeated, "Mom, let's run through the rain." "We'll get 5 if we do," Mom said. "No, we won't, Mom.That's not what you said this 6 " the young girl said as she tugged (拽) at her mom's arm. "This morning? 7 did 1 say we could run through the rain and not get wet?" "Don't you 8 ? When you were talking to Daddy 9 his cancer, you said, 'If God can get us through this, he can get us through 10 '!" The people became 11 . Nothing could be 12 but the rain.Mom thought for a moment about what she would say. "Honey, you are 13 . Let's run through the rain." 14 they ran off. People all stood watching, smiling and laughing as they 15 past the cars and through the puddles (水坑). They 16 their shopping bags over their heads. They got wet through, but they were 17 by a few who laughed like children all the 18 to their cars. People can 19 your money and health, but no one can ever take away your memories. So, don't 20 to make time to make memories every day. | ||||
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