单选题 Sightseeing and summer courses are now seen as necessary to broaden knowledge, sharpen the mind, and ______ new skills.

单选题 The two cars parked side by side were nearly ______ in color, making it challenging to distinguish between them at first glance.

单选题 Despite being ______ with responsibilities, they faced each challenge with resilience and determination, achieving success in their endeavors.

单选题 We need to improve the level of agricultural mechanization and use machines to ______ labor.

单选题 East China's Jiangsu province has been a ______ place for tea production since ancient times, and its tea-drinking culture is one-of-a-kind.

单选题 The healthcare industry is acting as a fast-growing engine of international trade and ______ between the two countries.

单选题 The period after 1980 was marked by a sharp ______ in economic growth, particularly in industry.

单选题 She was a woman who would not be stopped by fear or ______, risks to herself, or by other people's doubts or beliefs.

单选题 My dad was a man who had ______ himself in work intensely and unconditionally with every fiber of his being.