《2025年桂壮红皮书暑假天地河北少年儿童出版社六年级英语科普版》

[例5] The scientist failed many times in his experiments, ______ he never gave up.
A. but
B. so
C. or
分析：句意“这位科学家在实验中失败了很多次,但他从没放弃。”根据句意可知空格前后两个分句之间为转折关系。
答案：A

答案： A

[例6] Bob, dinner is ready. Please wash your hands ______ you eat.
A. when
B. after
C. before
分析：句意“鲍勃,晚饭准备好了。吃饭前请洗手。”根据常识可知,饭前要洗手。
答案：C

答案： C