问题 选择题

某同学用托盘天平称量物质的质量,大致可分为以下几步:①把称量物放在左盘,砝码放在右盘  ②调整零点  ③读出砝码和游码的读数后,砝码放回盒中,游码移在零处.其正确的操作顺序是(  )

A.①②③

B.②①③

C.③①②

D.①③②

答案

用天平称量物体时的正确操作步骤是:先调零点,然后在左右两盘中各方一张相同的纸,把称量物放到左盘,然后向右盘中放砝码,放砝码的顺序是先放质量大的,再放质量小的,最后用游码调平;读数后砝码放回盒中,游码移在零处.按照分析中的正确的顺序:②①③.

故选B.

填空题
单项选择题

After winning a big game, athletes are often asked how they feel. Usually athletes say how (1) it is to win this big game. On the contrary, the fact is that losing a big game, or in my case, all the games, can be even harder.

From the spectators’ point of view, last year’s basketball (2) for my high school team was nothing (3) of an embarrassment. And (4) 0 and 20 is certainly nothing to be proud of, that season had a bigger impact on me than any other. As a team captain, I knew it probably wouldn’t be the (5) year, but did I ever think we would lose every game Of course not. Since six of our top players had graduated, it was clear that we were a (n) (6) team who would struggle. The struggle began earlier than expected, (7) , as our team center was suspended (禁赛) for the season, and two key members decided to (8) for some reason. At this point, dropping out probably passed through every player’s mind, but in the end, we all stuck if out, (9) to work still harder.

Then there came a time when even our (10) and given up on us. Personally, I felt like it was (11) worthwhile giving my all. I thought, if even the coach doesn’t believe in us, why should I But just as my hope began to (12) , a teammate called a meeting. He said," Nobody thinks we are going to win, but, as teammates and friends, we (13) it to each other to go all out every game. "

It was that moment that (14) me how to be a leader. It hit me that I certainly didn’t (15) the role. As a leader you can never quit (16) the team who looks up to you. It is one (17) to be named captain, feel great and go through the motions, but it is quite another to be a real captain and make sure everyone realizes their full (18) all the time.

I am sure it is great to go through without losing and bringing home awards. But in all honesty, I (19) the fact that my team lost every game last year. It may not help me to become a better basketball player, but it already has made me a better leader, and (20)

8().

A.quit

B.stay

C.resign

D.rest