患者李某，女，30岁，体检发现β-HCG浓度增高，可排除的情况是（）。 A.早孕及宫

下列各句中没有语病的一句是（  ）   

A．“‘十二五’规划提出未来五年的十大任务中，第一个就是扩大内需战略，这里，关键是启动消费。”有关专家认为，原来我们出口导向型的增长方式和投资拉动型的增长方式已经走到尽头。

B．世界卫生组织这份一年一度的报告，提供了儿童与成人的死亡率、疾病谱以及吸烟饮酒等健康风险因素增加的最新资料。

C．各地教材大换血，鲁迅的多篇作品“被踢出去”，网友质疑道：“时代确实不同了，但谁又能否认我们这个时代不需要鲁迅精神了呢？”

D．除能够发出海啸预警外，这套新研制的天灾预警系统还可以对火山爆发和地震等极端天气状况发出警报，通知民众迅速撤离。

患者男，38岁，因“异基因造血干细胞移植术后1年，发热、咳嗽5天，气促1天”来诊，查体：体温39℃，呼吸50次/分，烦躁，口唇发绀，心音有力，心率140次/分，律齐，双肺可闻及管状呼吸音，未闻及湿啰音。实验室检查：血气分析示pH7.30，动脉血二氧化碳分压（PaCO）28mmHg（1mmHg=0.133kPa），动脉血氧分压（PaO）41mmHg，吸氧浓度（FiO）50%。胸部X线片：双肺弥漫性渗出病变，心影不大。

如应用容量型同步间歇指令通气和压力支持通气结合模式（V-SIMV+PSV）时，出现气道峰压过高报警，不宜采取的措施为（）。

A.检查管路是否堵塞

B.吸痰、解除支气管痉挛

C.增加吸气峰流速

D.应用镇静剂和肌肉松弛剂

E.改为压力调节容量控制（PRVC.模式

甲、乙两辆汽车都做匀速直线运动，其路程s随时间t变化的图像如图所示。从图可知，________车的速度大；5s内乙车通过的路程是_________m。

Journalists who write about families as well as social and cultural issues can count on receiving an annual barrage of public relations pitches for Valentine’s Day. The PR blitz begins right after Christmas and continues almost until the big day itself. Daily, sometimes hourly, e-mails pop up on my computer screen, as publicity agents propose stories on a variety of love-rated subjects.
Some suggest traditional topics: How about interviewing the author of a new book on how to find the perfect mate Or what about a story offering ideas on the best gifts to give to your heartthrob Other suggestions take a thoroughly modern approach to romance. Publicists would be happy to provide information about the newest matchmaking website or the hottest dating coach. There’s even a "psychic medium" who promises to tell radio and television audiences about their "current and future relationships".
Individually, these story promotions could be taken for what they are: just another day, another client, another dollar in the life of publicity agents. But collectively, they signal more than simply a desire to capitalize on a holiday that has mushroomed into a $17 billion industry. In their varied forms, these promotions reflect the urgency of the quest for love and companionship in a society where one-quarter of all households now consist of single people.
These pitches also serve as a measure of how much Valentine’s Day itself has changed. They can impel long-married observers to look back with a certain nostalgia to a time several decades ago when Feb. 14 didn’t carry such intensity--and when courtship didn’t cost quite so much. That was a time before men were expected to spend two months’ worth of their salary for an engagement ring, before men and women decided they would settle for nothing less than a "soul mate", and before it was necessary to seek advice from an army of self-help gurus bearing titles such as "relationship and interpersonal communication expert". That was also an era when many hopeful Prince Charmings could show their love with a card or a heart-shaped box of drugstore chocolates, and when even a single rose could melt a young woman’s heart.
What a contrast to today, when anything less than a dozen long-stemmed roses can risk making a sender appear frugal, and when an ardent suitor who wants to make an impression will buy chocolates from Belgium, whatever the cost. This year the average man will spend $120 and the average woman $ 85, according to the National Retail Federation (NRF).
Is this love, or obligation For some men, it might even include a bit of guilt. As Tracy Mullin, CEO of the NRF, notes, presumably with tongue planted firmly in cheek, some men "may be looking at Valentine’s Day as a way to make up for that HDTV they splurged on for the Super Bowl." As one public radio station announcer put it during a Valentine’s Day fundraiser offering long-stemmed roses. "This is a perfect way to fulfill your Valentine’s obligations." Another host making a similar appeal urged listeners to "take care of your Valentine’s Day duties."
And if you don’t One relationship expert quoted in a Valentine’s Day press release offers the stern warning that "if a guy doesn’t come through on Valentine’s Day, it means he doesn’t care about you," so just say goodbye and move on. But assuming he does care, another PR firm suggests a high-tech approach to the day. "This year, think outside the box and send a Video Valentine!" the e-mail pitch begins. "Too shy to say those three little words in person Profess your love on video! Or use your cellphone to record yourself shopping for the perfect gift. " Diamonds, anyone
Whatever the approach, couples might do well to follow the advice of a group of husbands in Japan who say they know the answer to wedded bliss. In an effort to communicate better with their wives, they offer Three Principles of Love. Say "sorry" without fear, say "thank you" without hesitation, and say "I love you" without shame. It’s a trio of sentiments that women could adopt as well.
Tomorrow all the unsold Valentines with their declarations of love and affection will disappear from card racks, to be replaced by Easter messages featuring eggs and bunnies. Long stemmed roses will begin to open, boxes of chocolate will be nibbled away, and cards with sentimental messages will be propped on desks and dressers. Whatever hopes and expectations are fulfilled--or not--today, the celebration offers a touching reminder that when it comes to matters of the heart, the approaches might change, but the yearning for love and companionship doesn’t. Above all, it offers this comforting reassurance. Cupid lives.

The last sentence of the passage "Cupid lives." ______.

A．serves as a concluding remark summarizing the main idea of the passage

B．is used as a contrast to the prevailing practice of Valentine’s Day celebration

C．shows the author’s belief in human yearning for love and companionship

D．is used as a fierce attack against the changing human relationship

根据发病的时期和部位不同，稻瘟病可分为几种？