What impressed the scientists most according to the text?

(单选题)—Could you tell me ______ way to Taylor Clinic?—Sorry, but I (单选题)—Where did you meet him?—It was in the hotel ______ he staye (单选题)When they moved to Canada, the children ______ to the change (单选题)______ fashion differs from country may reflect the cultural (单选题)Mr. Smith proposed the problem worth paying attention to ___ (单选题)The boy broke all the glass on purpose; he certainly deserve (单选题)Was it from the lake ______ he often went fishing ______ he  (单选题)______ children abroad for a tour can be a great honor for a (单选题)I wonder if your brother likes to play football, if he did,  (单选题)What’s the meaning of “fad” in the last paragraph?