Unit 2 Looking into the Future (单元测试)-【上好课】高二英语同步备课系列（人教版2019选择性必修第一册）

UNIT2单元测试 （考试时间：120分钟 试卷满分：150分） 注意事项： 1．本试卷分第Ⅰ卷（选择题）和第Ⅱ卷（非选择题）两部分。答卷前，考生务必将自己的姓名、准考证号填写在答题卡上。 2．回答第Ⅰ卷时，选出每小题答案后，用2B铅笔把答题卡上对应题目的答案标号涂黑。如需改动，用橡皮擦干净后，再选涂其他答案标号。写在本试卷上无效。 3．回答第Ⅱ卷时，将答案写在答题卡上。写在本试卷上无效。 4．考试结束后，将本试卷和答题卡一并交回。 第一部分 听力（共30分，略） 第二部分 阅读（共两节，满分50分） 第一节（共15小题；每小题2.5分，满分37.5分） 阅读下列短文，从每题所给的A、B、C、D四个选项中选出最佳选项。 A The fireworks that you see are most likely made in China. The country that makes90% of the world’s fireworks is also where they were invented. Most historians believe that the Chinese used firecrackers as early as the second century B．C． Many countries hold grand fireworks show at their important celebrations. Canadians, for example, put on fireworks show every July 1 to celebrate their own national birthday, as the French do on July 14 to mark the anniversary of their revolution. But the United States of America imports most of the world’s fireworks, spending more than $650 million on them per year. The Walt Disney Co. alone buys about $50 million worth. A mixture of gunpowder and other flammable compounds(混合物) causes fireworks to explode across the sky in all those pretty colors and fun shapes. Copper, for instance, burns bright blue while strontium(锶) creates deep red. Together, they produce purple. But the outlines fireworks form depend on the placement of these compounds inside their casing (known as the shell), as well as the shape of the shell itself. For centuries the only way to set off fireworks was by hand, but computer controlled equipment came out in the 1980s. Automation means more precisely timed explosions, making the displays more satisfying, not to mention safer. As you might imagine, setting off fireworks can release harmful substances into the air. For example, a chemical that has been linked to thyroid(甲状腺) problems. “Environmentally friendly”  fireworks were developed at the request of the Walt Disney Co. after it received smoke complaints from neighbors of Disneyland. Nowadays, an even more eco-friendly alternative to traditiona