Ⅴ.首字母填空
根据短文内容及首字母提示，在空格处填入一个适当的词使短文完整。
Each year, there are two days when day and night are of equal length. These days are called equinoxes(昼夜平分日). The one that f 1 in spring is called the Spring Equinox or Chunfen.
On the day of Chunfen, the s 2 is directly above the equator(赤道). After the day, the sun will begin moving northwards, resulting in longer daytimes in the Northern Hemisphere(北半球). As daylight hours gradually i 3, the weather gets warmer.
The day of Chunfen m 4 the start of the spring season in the Northern Hemisphere. After this day, migrating birds will return to the North and plants will begin to grow stronger w 5 the help of increased rainfall.
Nowadays, people in different places have different ways of c 6 Chunfen. They often go out to take part in various a 7 to enjoy the good weather. The most typical one is kite f 8. And the breeze on the day of Chunfen fits perfectly. With the arrival of spring, many people may feel t 9. Doing outdoor activities can help increase your energy and reduce the sleepiness of spring.
Apart from going outside, the Chinese cook some s 10 vegetables on the day of Chunfen. Since ancient times, they have held the tradition of eating different foods based on the changes in the seasons.
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【语篇解读】本文是一篇说明文。文章主要介绍了春分的天文现象、气候特征及相关传统习俗。
1. falls 解析:fall可表示"发生;适逢"。先行词The one是单数,且这里介绍客观事实,用一般现在时,所以动词用第三人称单数形式。故填falls。
2. sun 解析:根据常识可知,在春分当天,太阳"sun"直射赤道正上方。故填sun。
3. increase 解析:结合常识可知,春分之后,白昼时间会逐渐变长,即"增长increase",句子为一般现在时,主语为复数,谓语动词用原形。故填increase。
4. marks 解析:根据常识可知,春分日标志着北半球春季的开始,mark"标志着",句子为一般现在时,主语为第三人称单数,谓语动词用第三人称单数形式。故填marks。
5. with 解析:with the help of"在……的帮助下",为固定搭配。故填with。
6. celebrating 解析:根据"They often go out to take part in various ... to enjoy the good weather ..."可知,指庆祝春分,celebrate"庆祝",介词of后接动名词作宾语。故填celebrating。
7. activities 解析:根据"take part in"可知,指参加"活动",有various修饰,名词应用复数。故填activities。
8. flying 解析:kite flying"放风筝",为固定搭配。故填flying。
9. tired 解析:根据"Doing outdoor activities can help increase your energy and reduce the sleepiness of spring."并结合常识可知,春天人们可能会感到"疲惫"(tired)。故填tired。
10. special 解析:根据"they have held the tradition of eating different foods based on the changes in the seasons"可知是制作一些特殊菜肴,special"特殊的"。故填special。

【分析】
首先通读短文，把握文章主题为介绍春分的天文、气候及习俗相关知识。解题时，先理解每个空格所在句子的语境，结合首字母提示，运用词汇知识、固定搭配、语法规则（如一般现在时主谓一致）以及生活常识推断合适单词，确保填入后语句通顺、符合逻辑。
【解析】
1. falls：fall可表示“适逢、发生”，主语the one为单数，介绍客观事实用一般现在时，故用第三人称单数形式falls。
2. sun：根据自然常识，春分当天太阳直射赤道，故填sun。
3. increase：结合常识，春分后白昼时长逐渐增长，主语daylight hours为复数，一般现在时用动词原形increase。
4. marks：mark意为“标志着”，主语the day of Chunfen为单数，一般现在时用第三人称单数形式marks。
5. with：固定搭配with the help of表示“在……的帮助下”，故填with。
6. celebrating：根据语境，此处指庆祝春分，介词of后需接动名词，故填celebrating。
7. activities：take part in意为“参加”，various后接可数名词复数，故填activities。
8. flying：固定搭配kite flying表示“放风筝”，故填flying。
9. tired：结合常识，春天人们易疲惫，后文提到户外活动可减少春困，故填tired。
10. special：根据传统习俗，春分人们会吃特殊食物，special意为“特殊的”，符合语境。
【答案】
1. falls 2. sun 3. increase 4. marks 5. with 6. celebrating 7. activities 8. flying 9. tired 10. special
【知识点】
词汇运用、固定搭配、语境理解
【点评】
本题为结合自然常识与文化习俗的首字母填空题，既考查核心词汇、固定搭配的掌握，也要求学生能结合常识推断词义，难度适中。
【难度系数】
0.6