阅读短文，从每小题所给的A、B、C、D四个选项中，选出可以填入空白处的最佳选项。
Matt loved science, and he wanted to be the Science Star of the week. Now he was presenting his experiment in Mrs. Perry’s class.
“Let me show you 1 to make an egg float in the middle of the glass.” Matt 2 an egg into salt water. But it fell to the bottom.
“Look, Matt is blushing(脸红)!” Coco shouted. Matt covered his red face with his hands.
That evening he 3 The Book of Wonderful Science Experiments. When it came to the last page, he smiled. “This is the right experiment for me! It’s 4 to fail this time.”
The next day in front of his class, Matt 5 small pieces of paper onto the desk and rubbed a spoon with a cloth. “The spoon will 6 up the paper.” He raised the spoon, but nothing happened. The paper lay 7.
“Matt is blushing again!” Emily pointed out. Matt grew nervous and ran back to his 8 with a red face.
“Becoming the Science Star seems so 9,” Matt thought. That night he couldn’t sleep. “I had to make it, but the only thing I could do right was to blush.” Suddenly, a 10 came to his mind.
The following morning, Matt appeared before the class again, wearing his Mickey Mouse ears.
“Are those mouse ears on the head part of your experiment?” Someone laughed and Matt’s face 11.
“No, watch my face! Blushing is my experiment,” Matt answered. Everyone quieted down.
Matt continued, “When you feel 12, blood vessels(血管) near the surface of your skin widen, increasing blood flow to your face.” He showed a picture of blood vessels. “I’ve tried many times to control blushing, but now I know it’s a 13 part of being human. So the best thing to do is to 14 it.” The class cheered and Matt’s red face lit up the whole classroom.
“Matt is the Science Star of the week,” Mrs. Perry announced. Matt walked 15 back. What a perfect day!
() 1. A. why B. how C. where D. when
() 2. A. dropped B. threw C. poured D. pushed
() 3. A. checked out B. took down C. parted with D. looked through
() 4. A. simple B. strange C. impossible D. amazing
() 5. A. spread B. turned C. cut D. blew
() 6. A. rise B. catch C. pick D. take
() 7. A. silent B. still C. soft D. close
() 8. A. home B. classroom C. yard D. seat
() 9. A. difficult B. typical C. natural D. unbelievable
() 10. A. message B. decision C. idea D. dream
() 11. A. lost B. feared C. turned D. burned
() 12. A. calm B. anxious C. ill D. peaceful
() 13. A. proper B. clear C. weak D. normal
() 14. A. allow B. accept C. feel D. force
() 15. A. rapidly B. brightly C. proudly D. completely

1. B 2. A 3. D 4. C 5. A 6. C 7. B 8. D 9. A 10. C
11. D 12. B 13. D 14. B 15. C

【分析】
做完形填空需先通读全文把握主旨（本文讲述Matt尝试实验竞选科学之星，两次实验失败后将自身脸红现象做成实验，最终成功当选的故事）；再逐空分析，结合上下文语境、词汇含义、固定搭配及逻辑关系，排除错误选项，选出最佳答案。
【解析】
1. 考查疑问词辨析。此处指展示“如何”让鸡蛋浮在盐水中间，故选B（how）。
2. 考查动词辨析。实验中把鸡蛋轻轻放入盐水，drop符合操作场景，故选A（dropped）。
3. 考查动词短语辨析。look through意为“浏览”，符合晚上翻看科学实验书的动作，故选D（looked through）。
4. 考查形容词辨析。此前两次实验失败，故认为这次“不可能”失败，故选C（impossible）。
5. 考查动词辨析。spread意为“铺开”，符合把纸片铺在桌上的动作，故选A（spread）。
6. 考查动词短语。pick up意为“捡起”，对应勺子摩擦后应有的效果，故选C（pick）。
7. 考查形容词辨析。still意为“静止的”，指纸片未被吸起、保持静止，故选B（still）。
8. 考查名词辨析。实验失败后跑回自己的座位，故选D（seat）。
9. 考查形容词辨析。两次失败后，Matt觉得当科学之星很“困难”，故选A（difficult）。
10. 考查名词辨析。突然想到一个“主意”，idea符合语境，故选C（idea）。
11. 考查动词辨析。burned此处意为“变红”，对应脸红的状态，故选D（burned）。
12. 考查形容词辨析。人“焦虑”时脸部血管扩张，是脸红的原因，故选B（anxious）。
13. 考查形容词辨析。脸红是人类正常的生理现象，normal意为“正常的”，故选D（normal）。
14. 考查动词辨析。accept意为“接受”，对应接纳自己脸红的态度，故选B（accept）。
15. 考查副词辨析。成功当选后，Matt“骄傲地”走回去，故选C（proudly）。
【答案】
1.B 2.A 3.D 4.C 5.A 6.C 7.B 8.D 9.A 10.C 11.D 12.B 13.D 14.B 15.C
【知识点】
完形填空、词汇辨析、语境理解
【点评】
本文是贴近学生生活的记叙文，通过Matt的经历传递积极面对失败、接纳自我的理念，重点考查学生对词汇、上下文逻辑的理解能力，是难度适中的完形填空。
【难度系数】
0.6