【单选题】听力原文:W: One piece of cloth is pure wool and the other is a synthetic fabric. M: Amazing! I really can't tell them apart. Q: What does the man mean? (17)
【简答题】Write an essay in no less than 200 words with the title 'What can I Offer to Society?' First, write an outline for your essay, and then according to your outline, write your essay. Both your outline a...
【单选题】The figure at the right consists of four semicircles in a large semicircle. If the small semicircles have radii of 1, 2, 3, and 4, what is the perimeter of the shaded region?