中国与美国的自然地理特征相比，相似的有（    ）

阅读下面的文章，完成后面小题。

       暖国的雨，向来没有变过冰冷的坚硬的灿烂的雪花。博识的人们觉得他单调，他自己也以为不幸否耶？江南的雪，可是滋润美艳之至了；那是还在隐约着的青春的消息，是极壮健的处子的皮肤。雪野中有血红的宝珠山茶，白中隐青的单瓣梅花，深黄的磬口的蜡梅花；雪下面还有冷绿的杂草。胡蝶确乎没有；蜜蜂是否来采山茶花和梅花的蜜，我可记不真切了。但我的眼前仿佛看见冬花开在雪野中，有许多蜜蜂们忙碌地飞着，也听得他们嗡嗡地闹着。

       孩子们呵着冻得通红，像紫芽姜一般的小手，七八个一齐来塑雪罗汉。因为不成功，谁的父亲也来帮忙了。罗汉就塑得比孩子们高得多，虽然不过是上小下大的一堆，终于分不清是壶卢还是罗汉；然而很洁白，很明艳，以自身的滋润相粘结，整个地闪闪地生光。孩子们用龙眼核给他做眼珠，又从谁的母亲的脂粉奁中偷得胭脂来涂在嘴唇上。这回确是一个大阿罗汉了。他也就目光灼灼地嘴唇通红地坐在雪地里。

       第二天还有几个孩子来访问他；对了他拍手，点头，嘻笑。但他终于独自坐着了。晴天又来消释他的皮肤，寒夜又使他结一层冰，化作不透明的水晶模样；连续的晴天又使他成为不知道算什么，而嘴上的胭脂也褪尽了。

       但是，朔方的雪花在纷飞之后，却永远如粉，如沙，他们决不粘连，撒在屋上，地上，枯草上，就是这样。屋上的雪是早已就有消化了的，因为屋里居人的火的温热。别的，在晴天之下，旋风忽来，便蓬勃地奋飞，在日光中灿灿地生光，如包藏火焰的大雾，旋转而且升腾，弥漫太空，使太空旋转而且升腾地闪烁。

       在无边的旷野上，在凛冽的天宇下，闪闪地旋转升腾着的是雨的精魂……

       是的，那是孤独的雪，是死掉的雨，是雨的精魂。

                                                                                                                                                                                            一九二五年一月十八日

阅读下面短文,掌握其大意,然后从41—60各题所给的四个选项(A、B、C、D)中,选出最佳选项

    There was a man who played the piano in a small bar. There were not too many1, but because he was a good piano player, some people2came in every night just to hear him play. But one night, a patron (老主顾) told him he didn't want to hear him play but to sing a song.

    The man said, “I have never3that before in public. I think I'm4at playing the piano.”

    But the customer5. He told the waiter, “I'm6listening to the piano day after day. I want to hear something new and I want that guy to sing.”

    The waiter7across the room, “Hey, buddy! If you want to get8, sing a song. The patrons are asking you to sing!”

    9in order to bring some money home that night, the piano player who had never sung in public did so for the very first time. And 10 had ever heard the song Mona Lisa sung before11that night by Nat King Cole, and it surprised all, including the12himself!

    He had talent he was13on! He may have lived the rest of his life as a no-name piano player in a no-name bar, but because he had to sing, he14 to become one of the best-known entertainers in America.

    You, too, have skills and15. You may not feel as if your “talent” is particularly16, but it may be better than you think! And with persistence (坚持), most skills can be17. Besides, you may as well have no ability at all if you sit on whatever talent you18! The19is not “What ability do I have that is useful?” It is20“How will I use whatever ability I have?”.

小麦生长的后期(灌浆期和成熟期)，其光合作用的产物主要用于籽粒的生长和发育，该期间小麦吸收的水分主要用于：