题干

“是药三分毒”这句话的含义是(    )

A:药物都具有30%的毒性

B:凡是药物都带有一定的毒性和副作用

C:药物中都含有一定量的毒品

D:药物都含有70%的治疗作用

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答案(点此获取答案解析)

B

同类题2

阅读文言文,回答问题

     【甲】河曲智叟笑而止之曰:“甚矣,汝之不惠。以残年余力,曾不能毁山之一毛,其如土石何?”北山愚公长息曰:“汝心之固,固不可彻,曾不若孀妻弱于。虽我之死,有子存焉;寻又生孙,孙又生子,子又有子,子又有孙;子子孙孙无穷匮也,而山不加增,何苦而不平?”河曲智叟亡以应。操蛇之神闻之,惧其不已也,告之于帝。帝感其诚,命夸娥氏二子负二山,一厝朔东,一厝雍南。自此,冀之南,汉之阴,无陇断焉。

                                                                                                                                                                   (节选自《愚公移山》)

     【乙】余幼时即嗜学。家贫,无从致书以观,每假借于藏书之家,手自笔录,计日以还。天大寒,砚冰坚,手指不可屈伸,弗之怠。录毕,走送之,不敢稍逾约。以是人多以书假余,余因得遍观群书。既加冠,益慕圣贤之道。又患无硕师名人与游,尝趋百里外,从乡之先达执经叩问。先达德隆望尊,门人弟子填其室,未尝稍降辞色。余立侍左右,援疑质理,俯身倾耳以请;或遇其叱咄,色愈恭,礼愈至,不敢出一言以复;俟其欣悦,则又请焉。故余虽愚,卒获有所闻。

                                                                                                                                                                (节选自《送东阳马生序》)

同类题5

阅读理解

    Maybe you are aware that the latest job markets news isn't promising: Unemployment is still more than 9 percent, and new job growth has fallen close to zero, which is bad for economy, of course. And it may be especially discouraging if you happen to be looking for a job or hoping to change careers right now. But it actually shouldn't matter to you nearly as much as you think.

    That's because job growth numbers don't matter to job hunters as much as job turnover data. After all, existing jobs open up every day due to promotions, resignations, terminations, and retirements. In both good times and bad, turnover creates more openings than economic growth does. Even in June of 2007, when the economy was still falling along, job growth was only 132,000, while turnover was 4.7 million!

    And as it turns out, even today — with job growth near zero — over 4 million job hunters are being hired every month.

    I don't mean to imply that overall job growth doesn't have an impact on one's ability to land a job. It's true that if total employment were higher, it would mean more jobs for all of us to choose from. And it's true that there are currently more people applying for each available job opening, regardless of whether it's a new one or not.

    But what often distinguishes those who land jobs from those who don't is their ability to stay motivated. They're willing to do the hard work of identifying their valuable skills; be creative about where and how to look; learn how to present themselves to potential employers; and keep going, even after repeated rejections. The Bureau of Labor Statistics data showed that 2.7 million people who wanted and were available for work hadn't looked for a job within the last four weeks and were no longer even classified as unemployed.

    So don't let the headlines fool you into giving up. Four million people get hired every month in the U.S. You can be one of them.