54. What does the passage say is conservationists’ biggest worry?

　　53 What partly accounts for the reduction in spiders& 39; food supply?　　A) The long tradition of collecting

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　　52 What have spiders been associated with in the UK for centuries?　　A) Harm 　　B) Evil 　　C) Suffering 　　

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　　51 What do we learn about spiders in the UK since the middle ages?　　A) They have been generally misconcei

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　　50 Why are researchers advised to engage the services of professional writers or communication officers?　　A)

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　　49 How can sharing findings benefit researchers themselves?　　A) By helping them to identify new research dir

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