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农业、农村、农民问题关系国计民生。

材料一 ①孟子：民为贵，社稷次之，君为轻。

②荀子：君者，舟也；庶人者，水也。水则载舟，水则覆舟。

③秦朝统治残暴，对农民征收沉重的赋税，大规模征调民力，导致陈胜、吴广起义。

④汉初统治者采取休养生息政策，重视农业生产，减轻赋税、徭役，出现了“文景之治”。

⑤唐太宗减轻人民负担，发展农业生产，减省刑罚，使得经济发展，国力强盛。

⑥明末土地兼并严重，政府不断加派赋税，导致了李自成等领导的农民大起义。

材料二 秦孝公锐意改革秦国落后的局面， 任用商鞅变法。商鞅认为按照当时的土地赋税制度，秦国的实力尚不能满足与列国竞争的需要。为此，商鞅变法规定：废除秦国原来传统的土地制度，重新规划丈量土地，依照土地数量交纳赋税；官府奴隶可以凭借耕织的成绩恢复平民的身份，不从事农业生产而变穷的人则要被罚为官奴婢。

——摘编自晁福林《中国大通史·春秋战国卷》

材料三 南北朝时期，北方的粮食作物麦、粟等传入南方。隋唐时期长江流域的户口数量有很大的增加，单位面积耕地所负载的人口大大增多，这就迫使农民实行复种制（一年两熟），稻、麦复种制产生并发展。江南推广了曲辕犁，普遍采用插秧技术，缩短了水稻在大田中的生长期，双季稻在南方出现。

——摘编自阎万英等《中国农业发展史》

材料四 随着内燃机的发明，从20世纪初开始，内燃机拖拉机逐渐取代了蒸汽机拖拉机。20世纪40～50年代，在欧美的许多国家和地区拖拉机及电力机械已经成为农业生产中的主要动力。

20世纪90年代以来，信息技术改变着农业的生产方式和管理模式，土壤和作物得到精细准确的管理，资源利用率和农业产出率不断提高。

——摘编自夏俊芳《现代技术革命与农业机械化》

材料五 中华人民共和国不同时期粮食产量变化（单位：亿吨）

——整理自陈海秋《建国以来农村土地制度的历史变迁》

给下面下划线字选择正确的解释。

绝：A．断绝；B．完全没有，穷尽；C．走不通的，没有退路；D．死亡，消失；E．独一无二的；F．极、最；G．绝对。

刷子李有一手绝活，最让人叫绝的是他刷浆时必穿一身黑，干完活，身上绝没有一个白点。现在这门手艺已经绝迹了。

如图，已知∠B=∠D，要使BE∥DF，还需补充一个条件，你认为这个条件应该是．（填一个条件即可）

计算： 的结果是（    ）

下图1表示某动物（AaBb）卵细胞形成过程；图2、3表示卵细胞形成过程中某阶段的细胞。请据图回答：

读四幅气温和降水量变化图，回答问题。

如图所示为硅原子的结构示意图和硅元素在元素周期表中的信息。下列说法正确的是（   ）

下列实验操作能达到实验目的是(      )

选项	实验目的	实验操作
A	比较Fe、Cu、Ag的金属活动性强弱	铁丝浸入CuSO4溶液，铜丝浸入AgNO3溶液
B	验证NaCl溶液中混有盐酸	取少量溶液，滴加无色酚酞试液
C	不损坏铁制品的前提下除去表面铁锈	将铁制品长时间浸泡在足量的稀硫酸中
D	分离硫酸钠和硫酸铜的混合溶液	加入过量的氢氧化钠溶液后过滤，并将滤渣溶于稀硫酸

任务型阅读

    You probably talk to friends more than you talk to your parents. That's natural. Still, most of us want a parent's help, advice, and support at times. But talking to the parents may be difficult or terrible-especially when it comes to certain subjects. Here are some suggestions to make it easier.

    Talk about everyday stuff-and do it every day. ⑶The more you do something, the easier it gets. Talking to parents about everyday stuff builds a bond that can help you discuss something more serious with them later.

    Find something to chat(聊天) about each day. Talk about how your team did at the sports meet. Share something one of your teachers said. Even small talk about what's for dinner can keep your relationship comfortable.

    ⑷It's never too late to start. If your relationship with your parents makes you feel nervous, try getting into conversations slowly. Mention the cute thing the dog did. Talk about how well your little sister is doing in math. Chatting with parents every day not only keeps the present relationship strong, but also can help a might-be-worse relationship get better.

    When parents feel connected to your daily life, they can be there for you if something really important happens.

A)根据短文内容简要回答问题。

如图所示，质量为2kg的物块A与水平地面的动摩擦因数为μ=0.1，质量1kg的物块B与地面的摩擦忽略不计，在已知水平力F=11N的作用下，A、B一起做加速运动，则下列说法中正确的是（  ）

“实现中华民族伟大复兴，需要各民族手挽着手、肩并着肩，共同努力奋斗。”下列关于西藏的解放与发展正确的有：( ) 

①1951年西藏地方政府派出以阿沛·阿旺晋美为首的代表团入京谈判，实现西藏和平解放。

②1951年，人民解放军进驻拉萨，受到西藏各界热烈欢迎。

③1952年底，西藏地区完成民主改革，百万农奴翻身当家做主人。

④“一五”计划时期，为了密切与边疆的联系，我国先后建成了3条入藏公路。

下表微粒中，(以下均填字母编号)是阳离子的是；互为同位素的是；与是同种元素。

组别	质子	中子	电子
A	14	14	14
B	26	30	24
C	26	30	26
D	14	16	14

下列有关实验原理或操作正确的是(　　)。

南宋天文学家、思想家何承天在《论浑天象体》中记载“百川发源,皆自山出,由高趋下,归注入海。”下图为“水循环示意图”。据此，完成下面小题。

陈独秀说：“我们现在认定，只有这两位先生可以救治中国政治上、道德上、思想上一切的黑暗。”这两位先生是（   ）

若x，y为实数，且y= ，则x-y=．

是生命活动的直接能源物质，据图判断有关叙述错误的是( )

在医疗上，许多化学物质都可用于治疗疾病或辅助诊断疾病。

1929年国民政府《考试法》规定,参加高等文官考试需要具有以下资格:具有教育部承认的国外大学独立学院或专科学校毕业证,或者拥有国立或经立案的公私立大学独立学院或专科学校毕业证;或有同等学力或有专门技能或著作者,审查合格。该规定(   )

阅读理解

Online programs to fight depression are already commercially available. While they sound efficient and cost-saving, a recent study reports that they're not effective, primarily because depressed patients are not likely to engage with them or stick with them.

The study looked at computer-assisted cognitive (认知的) behavioral therapy (CBT) and found that it was no more effective in treating depression than the usual care patients receive from a primary care doctor.

Traditional CBT is considered an effective form of talk therapy for depression, helping people challenge negative thoughts and change the way they think in order to change their mood and behaviors. However, online CBT programs have been gaining popularity, with the attraction of providing low-cost help wherever someone has access to a computer.

A team of researchers from the University of York conducted a randomized (随机的) control trial with 691 depressed patients from 83 physician practices across England. The patients were split into three groups: one group received only usual care from a physician while the other two groups received usual care from a physician plus one of two computerized CBT programs. Participants were balanced across the three groups for age, sex, educational background, severity and duration of depression, and use of antidepressants(抗抑郁药).

After four months, the patients using the computerized CBT programs had no improvement in depression levels over the patients who were only getting usual care from their doctors.

"It's an important, warning note that we shouldn't get too carried away with the idea that a computer system can replace doctors and therapists," says Christopher Dowrick, a professor of primary medical care at the University of Liverpool. "We do still need the human touch or the human interaction, particularly when people are depressed."

"Being depressed can mean feeling lost in your own small, negative, dark world," Dowrick says. Having a person, instead of a computer, reach out to you is particularly important in fighting that sense of isolation. "When you're emotionally fragile, you're even more in need of a caring human being," he says.