医生常常选择患者手背上的“青筋”作为输液针刺部位，这些“青筋”是（　　）

下列地区的气候受洋流影响较大的是（   ）
①东亚季风气候       ②西欧温带海洋性气候
③亚马孙平原热带雨林气候        
④秘鲁太平洋沿岸荒漠环境     

完形填空

    Learning experiences happen to us throughout our lives, and not too long ago, I had one that I would like to 1 . This story began with a 2 three years ago. It's a story of pizza and being3of buying ice cream with a US $20 bill.

    I was going to Marblehead, Massachusetts, with my racing team on the highway and we were all 4Luckily, we saw a rest area5. I had a brand-new US $ 20 bill, and I had 6had that kind of cash before. Spending it on food 7to me like throwing it away.

    We all rushed into the pizza line. 8 I got a cheese pizza and drink. Halfway through the 9, I realized I had not actually 10 any money to the cashier. I felt terrible. I just couldn't go back to the cashier and11my stolen pizza. I would feel embarrassed.

    I was so upset that I refused to give myself the12of an ice cream in fear that someone would say, "Hey, Jeff, why don't you 13 the change from the pizza instead of that nice, new US $20 bill?"

     was not so proud of my 14 now.

    For the next two years, whenever I was15of the "Pizza incident," I 16my eyes and said to myself, "Not gonna think about it, not gonna think about it…"

    I think this 17the saying, "A coward (懦夫) dies a thousand deaths, a hero dies 18." I was a coward and have felt19 about that incident at least a thousand times. If I had been a "hero" and gone 20up to pay for the pizza, then I would have felt a little embarrassed about it only once, or maybe twice.

阅读下面材料，在空白处填入适当的内容(1个单词)或括号内单词的正确形式。

Redenvelopes ____(relate) to the Chinese Lunar New Year for long. I myself havehad plenty of ____(experience) both receiving and giving out red envelopes inthe past, and generally speaking, it's been fun. I mean，who doesn't love free money?

 I'm truly surprised by the extent of people'sobsession with virtual red envelopes this year. In fact, everyone I know spentat least a day or two ____(crazy) shaking their smart phones，mostly trying to get as much lucky money as possible. Thanksto messaging app giant WeChat's new feature ____ allows users to send moneyelectronically, grabbing virtual red envelopes has never seemed so easy.

 Just in case you are one of the very fewpeople still not on the bandwagon, here's ____ it works. Givers link theirWeChat to their bank accounts, and then they can send specified amounts ofmoney to their WeChat contacts through a personal message. They can also putthe cash up ____ grabs in chat groups full of friends, and anyone who acts fastenough will get ____ share. Later，receiverscan transfer the funds from their WeChat back into their own bank accounts.

 In theory，thissounds like a fun game. I'm always for some harmless fun in life, so my naturalresponse would be：Why not? Moreover,I've always believed that it's human nature to want free stuff, regardless ofwhether you actually need it or not. This may not be a good quality, ____ it'snot against the law, so I won't get all judgmental here. ____(consider) thesereasons, I really can't fault anyone for their enthusiasm in grabbing virtualred envelopes. I would have done it too, ____ I not thought linking WeChat tomy bank accounts was too much trouble.

三个相同的电阻，分别通过如图甲、乙、丙所示的交变电流，三个图中的I₀和周期T相同．下列说法中正确的是（   ）