For those who have come to learn Chinese language for a long time, the best way to improve the Chinese language skills is to practice in reading. Usually, they should answer several questions after reading to check whether they have understood it or not. The following passages are an typical example.

许多坐办公室的人午间休息时，喜欢趴在办公桌上。有些人一觉醒来，突然发觉枕着的手臂被压得又红又麻，虽然几分钟后这些现象会消失，但经常这样使桡神经受压，就会演变成神经麻痹。不少人的肩痛、手臂酸痛等问题，可能都与用胳膊当枕头有很大关系。

另外，吃过午饭立即睡觉也不好。因为吃完饭，大量食物在胃里，为了更好地消化吸收，人体就会增加胃、肠的血流量，此时大脑的血容量就会减少，血压也随之下降，这时睡觉很容易因脑供血不足而导致中风。所以饭后应活动活动再午睡。

After reading the text above, the learners in qualified Mandarin program need to find answer of the following questions:

（1）吃过午饭立即睡觉不好主要是因为：
A. 容易神经受压 B. 容易脑供血不足 C. 容易神经麻痹 D. 容易损伤肠胃
（2）本文最合适的题目是：
A. 睡眠姿势与健康 B. 办公室人员健康须知 C. 中风的预防 D. 神经麻痹与中风

The first question is mentioned in the second paragraph and the reason is followed. Accordingly, you will find the answer should be容易脑供血不足. To answer the second one, learners who study Mandarin online should know the general idea of the text. The topic is about the problems caused by the bad sleeping ways, thus the title should be 睡眠姿势与健康.