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Heman Bekele is 15 years old. He sees people in Africa working in the hot sun for a long time. That makes it easier for them to get skin cancer (癌症). And that often costs a lot. So Heman thought of a cheaper way: a bar of soap with a skin-cancer medicine.

To get help, he took part in a 3M’s competition last year in 2023. He sent a video explaining what he had in mind. Soon, he was named the winner and got the support he needed. Since then, he has been working on his idea.

It could take years before the soap can be bought by people. But the 10th grader is hard-working. Over the summer, he spent every weekday in the lab. “It’s so wonderful to think that one day, my bar of soap will be able to do good to someone else’s life.”

1.1.Skin cancer is often caused by ________.

A the sun

B the wind

C the snow

D the rain

解析：选A。A 推理判断题。根据第一段的“He sees people in Africa working in the hot sun for a long time. That makes it easier for them to get skin cancer.”他看到非洲的人们长时间在烈日下工作。这使得他们更容易得皮肤癌。由此可推知，皮肤癌常常是由于日晒造成的。故选A。

2.2.A bar of soap is _______.

A comfortable

B clean

C free

D cheap

解析：选D。D 细节理解题。根据第一段的“So Heman thought of a cheaper way: a bar of soap with a skin-cancer medicine.”可知，肥皂更便宜。故选D。

3.3.When was Heman born?

A In 2007.

B In 2008.

C In 2009.

D In 2010.

解析：选C。C 数字计算题。根据第一段的“Heman Bekele is 15 years old.”和第二段的“he took part in a 3M’s competition last year in 2023”可知，今年是2024年，故他出生于（2024-15=）2009年。故选C。

4.4.What does the underlined word “support” mean in Chinese?

A 高兴.

B 帮助.

C 实现.

D 理解.

解析：选B。B 词义猜测题。根据划线单词所在段第一句的“To get help”可知，后文他参加竞赛是为了获得“帮助”。因此可推测当他获胜后，他成功得到了帮助。故选B。

5.5.Heman is _______.

A kind and hard-working

B poor and noisy

C fit and special

D lazy but wise

解析：选A。A 推理判断题。根据希曼想要用更便宜的方法治疗皮肤癌可知他很善良，根据最后一段内容可知希曼很努力。故选A。