我国1月南北气温相差大，最主要的影响因素是（    ）

阅读下面材料，在空白处填入适当的内容（不多于3个单词）或括号内单词的正确形式。

For many years, volunteers, both young and old, have been helping the poor and elderly people of this area. They work long hours building wheelchair paths, fixing leaky(有漏洞的) roofs and repairing the homes of those____ need help. Their only payment is the happy smiles and grateful hearts of the people whom____have helped.

I will always remember one man in particular____he has a real enthusiasm for voluntary work. He seemed to have inspired all the people in his group with his____(cheer) spirit. Every day when I asked him____he was doing, he would reply, “I'm doing good!”____the end of the month as he was preparing to leave, I looked at all the homes he ____(fix) and had to agree that he was indeed doing____good job!

A nice house, a successful career, and a lot of money might be nice to have, but____(compare) with fixing others' home and helping those who are in need, their____(significant) is not so great.

下列各句中，加线的成语使用不恰当的一句是（    ）

    ①2018年，海南一跃成为全球最大的自贸区（港），万众zhǔ目。②作为最新设立也是前景最为广阔的自贸区（港），海南有着巨大的优势。③首先，海南的地理位置______（A．独树一帜；B．得天独厚）。④从亚洲范围来看，海南位于东亚和东南亚的中心位置，是泛南海合作的中心，海上丝绸之路的关键节点。⑤其次，海南的土地面积最大，即使与新加坡和迪拜等老牌国际知名自贸港相比，未来海南也毫不逊色。⑥再者，海南是______（A．驰名中外；B．超凡脱俗）的国际旅游岛，环境优美，是镶嵌在中国浩瀚南海上的一颗明珠。⑦海南空气清新，散发着醉人的芬芳；阳光明媚，绽放着火一般的热情；________________________。⑧非常适合居住、度假和开展商贸活动。⑨建立自贸区（港），必将使海南飞速发展mǐ全球。