下列各句中，没有语病的一句是（    ）

如图，小敏同学想测量一棵大树的高度．她站在B处仰望树顶，测得仰角为30°，再往大树的方向前进4m，测得仰角为60°，已知小敏同学身高（AB）为1.6m，则这棵树的高度为（　　）（结果精确到0.1m， ≈1.73）．

某同学学习了燃料的热值后，自己设计了一个实验来探究煤油和菜籽油的热值大小关系．他实验时组装了如图所示的两套规格完全相同的装置，并每隔1分钟记录了杯中水的温度（见下表）．

下列物质中既是光合作用的原料，又是呼吸作用的产物的一组是（）

增加:在缺词处加一个漏字符号(∧),并在其下面写出该加的词。

删除:把多余的词用斜线(﹨)划掉。

修改:在错的词下划一横线, 并在该词下面写出修改后的词。

注意: 1）每处错误及其修改均仅限一词;

2）只允许修改10处,多者(从第11处起)不计分。

    When I intended to tell my four-year-old niece Lisa the story Snow White write by the Grimm Brothers, my elder sister stopped me immediate and gave me another storybook. When I asked if she has told Lisa the story, she shook her head and said, “I don't think girl today should listen to this story.” I was confusing. Later, my sister explained how. In this story, Snow White does nothing to rescue herself. Instead of, she depends on others' help. My sister doesn't want her daughter to learn just to turn to others help. She wants her to learn to be brave and independence. That's why my sister doesn't want to tell herself such stories as Snow White.