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限一词;

2).只允许修改10处，多者（从第11处起）不计分。

    I have been feeling tired these days and often find hard to concentrate on my study. My teacher told me that it was the sign of anxiety. She advised me to read an article about reducing tension and improving brain efficient. I listened to her and found some useful ways in it. I began to form a habit of taking a nap for 15minutes at noon and try to spare 30 minutes a day to get move. A walk on the playground was beneficial. Besides, following the author's advices, I would play words with friends during class break, which made the brain refreshed and worked better. Having fun with friends is really a good way of becoming relaxed.

    Being tired may influence our mood though it has positive side. The brain can be the more creative. The author reminds what we should not fall asleep with brush in hand and we had better do something creative.

下图为三种血管关系示意图，请你据图回答下列问题：

（1）写出图中标号所示血管名称：
①____ ②____ ③____ 
（2）血液在标号____ 处流动最快，红细胞在标号②所示血管内呈单行通过，该血管管壁只由____ 扁平上皮细胞构成，管内血流速度最慢。这些特点便于血液与组织细胞进行物质交换。