Unit 1 单元话题语法填空练习-2023-2024学年高二英语选择性必修第二册单元重难点易错题精练（人教版2019）

Unit 1 Science and Scientists 单元话题语法填空练习 （2023秋·广西柳州·高二广西柳城县中学校考开学考试）阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。 The robot lawn mowers (割草机) 1 (design) by us have the following benefits besides saving you time and effort. First, they are environmentally friendly. With global warming now 2 (be) a major concern you can have peace of mind with these mowers. They run on rechargeable batteries and do not use petrol or burn oil like conventional lawn mowers. Second, they work very 3 (quiet). After careful assessment, noise from them 4 (find) to be about 60 decibels (分贝) lower than a typical lawn mower, so you can program them to work at night while you sleep. Third, rain sensors in our robot lawn mowers warn the robot 5 (return) to its shelter or stay in its shelter while it’s raining. On 6 other hand, if you are using a simple electric lawn mower, you will have to stay out in the rain while you get your mower under shelter 7 it will be useless. Fourth, bump sensors in our robot lawn mower protect the lawn mower from running over items 8 may be lying in the yard, thus increasing its life and efficiency. Last but not least, they are 9 (benefit) for people with allergy problems — they can cut your grass while you sit far away, reading your favourite novel 10 comfort. （2023春·全国·高二随堂练习）语法填空 This year’s Nobel Prize for Physiology or Medicine has been awarded to Tu Youyou (co-winner), 11 research led to the discovery of artemisinin, 12 crucial new treatment for maria. Artemisinin has saved hundreds of thousands of lives, and has led to 13 (improve) health for millions of people. Over 200 million people around the world get maria each year, and about 600, 000 die from it. Artemisinin has become a vital part of the treatment for malaria, and 14 (think)to save 100, 000 lives a year in Africa alone. Tu Youyou, a 15 (commit) and patient, was born in Ningbo, China, on 30 Decem