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问题 填空题 案例分析题

如图所示是人体体液调节的局部示意图，A细胞分泌的物质C作用于B细胞。请据图回答问题：

如果A细胞是甲状腺细胞，正常人在气温下降时，C物质的分泌量会（），激素C的靶细胞能否为下丘脑细胞？（）。试简要说出理由（）

答案

参考答案：上升；能；甲状腺激素过多，会作用于下丘脑，抑制下丘脑的分泌

改错题

短文改错（共10小题；每小题1分，满分10分）

文中共有10处语言错误，每句中最多有两处。每处错误涉及一个单词的增加、删除或修改。

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。

Should students make the friends online? Some people say yes. The Internet helps make many friends. Chatted online, students can express their feelings and opinions more free, and even get help with their foreign language studies.

Others, however, think students should not. They say make friends online is waste of time, which should be spending more meaningfully on study. Moreover, some students get cheat when they try to meet the friend they made online.

It is my opinion which students should place their study, health and safe before other things. As for friendship, we can readily find them in our classmates and other people around us.

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计算题

如图所示，在质量为M的玻璃管中盛有少量的乙醚气体，用质量为m的软木塞将管口塞住，加热玻璃管使软木塞在乙醚蒸气压力下水平飞出，玻璃管悬于长为L的轻杆上，轻杆可绕O端无摩擦地转动。欲使玻璃管在竖直面内做圆周运动，在忽略能量损失的情况下，乙醚最少要消耗多少内能？

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