下列是有关细胞分裂的问题．图（一）表示细胞分裂的不同时期与每条染色体DNA含量变化的关系；图（二）表示处于细胞分裂不同时期的细胞图像；图（三）表示细胞分裂不同时期细胞核内染色体、染色单体和DNA含量的关系．

请据图回答：

梵高是荷兰的一位具有世界影响的大画家。下列名画中，属于他的代表作的是（    ）

— How much _______ the trousers?

— _______ 88 yuan.

判断对错：

小芳走一步大约是50米长．

     I like taking a long walk in the nature park. I do that    1  . It really makes a great    2   to the whole day! I usually walk up this nice long road. It's so quiet and pleasant   3   there are so many green trees.
    This morning, I walked on that road as usual.  4I was walking back down the road, on my way back    5 the car, I met a man. I saw him   6 on the grass by the roadside. He was breathing(呼吸) really    7 . I asked if he was OK. He said he was   8  tired to walk anymore. I thought he needed some  9  . So I began to look for some clean water.    10 , there weren't any places to get water in 11  a nature park. I walked back to my car    12  to see if there was some. Because I sometimes bring bottled water and leave    13in my car. Thankfully, I found some today.
    Instead of (代替) drinking it myself, I drove back to the man and gave him my bottle of water. Then I gave him a   14   back to his car. He was so thankful! I could tell he was very happy and surprised that someone was    15   to come back for him and give him some water. And also, I was very happy that I could share my water with others.