小森把托盘天平放在水平桌面上，游码在标尺左端0点，在横梁平衡前指针的指示情况如图1甲所示，此时应进行的操作是_____________________；天平横梁平衡后，在称物体质量时，他在天平右盘中加减砝码后，指针的指示情况如图1乙所示，这时他应进行的操作是_______________。
他家的一个水龙头因关闭不严，导致滴水不止。他用质量为80g的烧杯放在水龙头下接水滴，1min后将装有水的烧杯放到已调好的天平左盘中，逐渐在另一个盘中加砝码，移动游码，直到指针指到分度盘的中央时，盘内砝码及游码的位置如图2所示，那么小森家的这个水龙头1min漏掉水的质量为_________g，一昼夜漏掉水的质量为_______kg，因此他赶快请人进行了修理。
图1 图2
向左调平衡螺母； 向右盘加砝码； 44 ；63.36
| Recently, I flew to Las Vegas to attend a meeting. As we were about to arrive, the pilot announced with apology that there would be a slight (16) before setting down. High desert winds had (17) the airport to close all but one runway. He said that we would be (18) the city for a few minutes waiting to (19) . We were also told to remain in our seats meanwhile with our seat belts fastened (20) there might be a few bumps(颠簸). Well, that few minutes turned into about four-five minutes, including a ride that would make a roller coaster(过山车) (21) by comparison. The movement was so fierce that several passengers felt (22) and had to use airsickness bags. As you might guess, that’ s not a good thing to have happen in a(n) (23) space because it only (24) to increase the discomfort of the situation. About twenty minutes into the adventure, the entire airplane became very (25) There was now a sense of anxiety and fear that could be (26) noticed. Every passenger simply held on for dear life …except one. A (27) was having a good time！ With each bump of the (28) , he would let out a giggle (咯咯地笑)of delight. As I observed this, I (29) that he didn’t know he was supposed to be afraid and worried about his (30) . He neither thought about the past nor about the future. Those are what we gown--ups have learned from (31) . He was (32) the ride because he had not yet been taught to fear it. Having understood this, I took a deep breath and (33) back into my seat, pretending I was (34) on a roller coaster. I smiled for the rest of the flight. I even (35) to giggle once or twice, much to the chagrin(随恼) of the man sitting next to me holding the airsickness bag. |
My wife could not find her biscuits and drink in my mother’ s house because______.
A．she had already finished them
B．my mother had taken them away
C．she forgot where she had left them
D．someone in my family was holding them