根据句子意思，用括号中所给汉语提示或英语单词的适当形式填空。-优题课

阅读下面材料，用方框中所给单词的适当形式在空白处填空，每词限用一次。请将完整的单词填写在答题卡对应的横线上，每空只能填一词。

good it factory surprise set encourage hard but for success

A man sees a butterfly. The butterfly tries to get out of ____1____ chrysalis (蛹). The man cut the chrysalis and the butterfly comes out easily. To his ____2____, the butterfly is unable to fly. If the butterfly doesn’t struggle (挣扎) to get out of the chrysalis, it can’t fly. The struggle develops the energy in the butterfly. Similarly, the challenges of life bring out the ____3____ in young people and prepare the ability to “fly”.

When people are young, meeting and overcoming challenges will make them strong and ready to face life. For successful people, the more challenges they have had, the more ____4____ they are. One famous man, who now owns many big ____5____, used to sell socks from door to door when he was young. Another successful man is Eric. He ____6____ up a college at the age of 30. His father died when he was only 16. He worked ____7____ in the day and studied hard in the night. His father’s death forced him to grow up fast. He took up the challenges and overcame them. Today, not only he himself, ____8____ also his brothers and sisters are leading successful lives.

Nowadays, some parents and teachers actively ____9____ young people to face challenges. It is important ____10____ them to learn to meet challenges and overcome them.

用方框中所给单词的适当形式填空，使短文完整、通顺。每词限用一次。

be; post; science; other; surprise; see; while; one; anything; we

What color is a tennis ball? Ask your classmates, and they might give you some ___（1）___ answers.

The Atlantic asked 30, 000 people this question. Among the people surveyed, 52 percent said tennis balls are green, 42 percent said yellow, and 6 percent said ___（2）___ else.

According to the International Tennis Federation, tennis balls ___（3）___ yellow. So, why do most people say that they’re green?

When we ___（4）___ see an object in natural light, our brains recognize its true color. Even if the object ___（5）___ in different kinds of light later, our brains can still tell its true color. ___（6）___ call this color constancy (色彩恒常性). For example, we know that China’s flag is red. When we see it during sunset or under purple light, we still know that it is red, even if it looks like a different color.

However, the color of a tennis ball is not as pure (纯的) as the flag. It appears to be a mixture of yellow, a “warm” color, and green, a “cool” color.

The US-based magazine says that when ___（7）___ brains try to figure out what color the ball is, some people ignore (忽略) cool colors like green, blue and purple. So they see the ball as yellow. ___（8）___ ignore warm colors, such as red, yellow and orange. They see the ball as green.

It is not just tennis balls that make such confusion. In 2015, a girl ___（9）___ a picture of a dress online. Some people said the dress was black and blue ___（10）___ other people said it was gold and white. They had different opinions based on whether they ignored cool or warm colors.

Different activities were held to celebrate the ________ birthday of the Communist Youth League of China last month. （hundred）

Tourists can see many western-style ________ in Shanghai Disneyland. （build）

Because COVID-19 hasn’t gone away, wearing masks （口罩） in public is a good way to look after ________ and the people around us. （we）