按要求，写单词。

walk（第三人称单数形式）____

2016年某商品的价值用该国货币表示为60元。如果2017年生产该商品的社会劳动生产率提高50%，且该国货币贬值20%，其他条件不变，那么该商品的价值用货币表示为（    ）

中国近代史上，日本曾两次发动侵华战争。阅读材料，回答问题。
材料一：在近现代历史上，每每在中华民族气运的关键时刻和转捩点上，总能发现日本幽灵般的身影，一再打碎中国“起沉疴、图崛起”的希望，是让近代中国屡次沉沦的梦魇。
——王海涛《日本改变中国》
（1）近代历史上日本第一次“打碎中国‘起沉疴、图崛起’的希望”指的是哪一历史事件？该事件对中国有何重大影响？
材料二：不应忘记的事实是：日军在投降前已经被中国人民的连续八年、大小几十万次的战斗打得狼狈不堪了。日寇犹如一匹野兽，使他最后致命的可能只是一两支箭，但如果他不是在毙命前已经满身创伤呢？他还是会继续挣扎的。
——齐世荣《论中国抗日战争在第二次世界大战中的地位和作用》
（2）结合所学知识说说“使他最后致命的可能只是一两支箭”指的哪些事件？材料二的作者认为日本法西斯灭亡的主要原因是什么？
材料三：尼米兹海军上将始终认为，美国海军的绝对优势就足以获胜。苏联的参战，出人意料地得到负责中国境内空军作战的陈纳德将军的支持，他认为，红军参战是决定的因素。
——H·米歇尔《第二次世界大战》（对于日本战败的原因）
（3）你如何看待材料三中尼米兹上将和陈纳德将军关于对日战争胜利原因的观点？

阅读下面短文，掌握其大意，然后从36—55各题所给的四个选项（A、B、C和D）中，选出最佳选项，并在答题卡上将该项涂黑。

    Every day, I drive home along Colorado Blvd, a wide street with four lanes on each side of the median (中央分隔带护栏). I always notice a homeless man standing on the corner of Colorado Blvd, 1 for spare change with a sign in his hand.
Last Monday, when I was 2 him, he suddenly threw down his sign and rushed into the middle of the street. At this time I 3 a car moving across the 3 lanes of traffic and heading for the  median. The 4 man ran to the side of the car and attempted to push the car back in the right 5. He also knocked on the window of the vehicle, but all  6 Immediately, he ran across the small median into four lanes of oncoming traffic, 7 madly for the cars to stop. Thankfully, all speeding cars 8 to stop just in time to 9 hitting him. The car which was out of 10 came Moving across the median and the four lanes of traffic, where just seconds ago cars had been traveling with 11 speeds.
    The homeless man jumped back in front of the 12 to attempt slowing it down again. By this time, we were able to 13 and help the man stop the car 14 it ran into a supermarket on the other side of the road. As it 15 out, the woman driver had a heart attack while driving and became 16 in the front seat.
    The homeless man is indeed a hero. He spends every day getting 17 by people who are trying not to make 18 contact with him so that they don't feel bad not giving him money. Yet he didn't  even hesitate to risk his life to save this lady and other drivers who would have 19 into her. He didn't think of his safety, nor did he expect anything in return. Heroes do exist in the most 20 places.