题干

课外拓展阅读

    送杜少府之任蜀州

城阙辅三春,风烟望五津。

与君离别意,同是宦游人。

海内存知己,天涯若比邻。

无为在岐路,儿女共沾巾。

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同类题3

阅读表达 阅读下面的短文并用英语回答问题,并将答案写在答题卡上标有题号的横线上。

    The way we spend our time can be. divided into three groups,or jars(罐子).These would be the necessary tasks jar, the voluntary tasks jar and the happiness jar.

    Every day,we spend time filling the necessary tasks jar. We fill this jar with useful things,like making money,doing housework,buying food and paying bills. We then fill another jar with voluntary tasks like taking children to activities and cooking family meals. Those jars are very important,but we may not enjoy them. If we don't fill them each day,our family won't run properly.

    However, we often forget to fill the third jar—the happiness jar. This is the jar that we fill with activities that make us happy. Is your happiness jar sometimes empty at the end of the day? We all have days like that. Between doing all the necessary, and voluntary tasks,time flies by on some days,and before we know it,it is time for bed.

    That is why each day we try to fill our happiness jar. Most days,I fill mine by going to the ballroom dance(社交舞)class. Playing music is another way that I fill my happiness jar. This week,I was happy to take part in an orchestra(管弦乐队)practice at my church(教堂).At the end of the evening, my happiness jar was full.

    Consider how your time is spent. Try to find ways to achieve a balance. At the end of the day,hopefully we've done all we can to make sure that our happiness jar is filled.

同类题4

研究人员用同种小鼠进行了某中药制剂、四环素(一种抗生素)对肝脏脂肪含量影响的实验.实验设计和结果如下表所示(中药制剂和四环素都用生理盐水溶解),请据表分析回答:

组别

除每天喂养相同的饲料外,进行如下处理

在第11天测量并计算每组小鼠肝脏脂肪的平均含量(mmol•L﹣1)

连续11天每天喂下列试剂

同时第8天至第11天每天腹腔注射下列物质

甲组

等体积生理盐水

等体积生理盐水

0.49

乙组

等体积生理盐水

0.025mmol四环素

6.51

丙组

中药制剂(0.05g)

0.025mmol四环素

4.74

丁组

中药制剂(0.10g)

0.025mmol四环素

4.52

戊组

中药制剂(0.15g)

0.025mmol四环素

4.10

(1)若要观察小鼠皮下脂肪细胞中的脂肪颗粒,可用____ 染色.

(2)现有健康的体重相近、发育状况相同的雌雄小鼠各100只,按上表的实验设计应将这些小鼠进行分为五组,每组的情况为____ ,表中所示的实验自变量有____ .

(3)甲组和乙组对照可说明腹腔注射四环素导致____ .上表实验结果可初步说明该中药制剂能____ (填“降低”或“升高”)肝脏脂肪的累积量(增加量).

(4)研究人员认为,要证明某中药制剂对肝脏脂肪含量的影响,还需要观察中药制剂对没有注射四环素的小鼠肝脏脂肪含量的影响.请完善实验设计并回答问题:

Ⅰ.实验步骤:

①步骤一:按上表所示的实验设计的要求增加3组小鼠,并编号.

②步骤二:这3组小鼠除每天喂养相同的饲料外,每天还需分别喂0.05g、0.10g、0.15g的中药制剂,共11天.同时在第8至11天注射____ ,保持其它条件相同且适宜.

③步骤三:测量并统计实验结果.

Ⅱ.讨论:

①将得到的实验结果与上表的____ 组的结果进行对照,然后得出结论.

②步骤二中需要“保持其它条件相同且适宜”,其原因是除需保持单一变量使各组之间有对照外,还需____ .