III. Select the appropriate words to fulfill the blanks. 从同义词(括号内)中选择合适的词填入空格中 。 1. One of the ___________ features of this book is its ________ illustrations. (distinguished, distinctive, distinct) 2. His grandfather had been a _____________ university professor. (distinguished, distinctive, distinct) 3. They_________ to have discovered a cure for the disease. (proclaim, claim ) 4. The government has ______________ a new law. (proclaimed, claimed )