3.2.4The main purpose of this passage is to ().

1.11题目:Topics for conversation should be () to the experiences and interests of the students.

1.10题目:Despite his father’s () objection， Darwin accepted the invitation to be a naturalist on H.M.S.Beagle during the voyage of exploration.

1.9题目:The bossy manager is always finding fault with his ().

1.8题目:She could hardly () laughing.

1.7题目:Color blind people often find it difficult to () between blue and green.

1.6题目:When he was questioned about the missing ring， he firmly()that he had ever seen it.

1.5题目:The teacher asked each of us () what he had been doing.

1.4题目:Water encourages the () of iron and oxygen to form rust.

1.3题目:I have to book ahead for concert， () are usually held in London.

1.2题目:Can you tell me () about this city that makes people love it so much?