1a 41. They are currently _ in lengthy trade negotiations. A) engaged B) busy C) obliged D) occupied正确答案： A 42.At the first _ of twelve all the workers in the factory stopped for lunch. A) strike B) bell C) stroke D) hit 正确答案： C 43.A solar day is the length of time _ the Earth to revolve once around the Sun. A) takes B) takes it C) it takes D) one takes 正确答案： C 44.He obviously displays a great _ for some of your poems. A) consent B) ad
