__________ A) He needs some tomato juice. B) His pants are stained. C) His pants need mending. D) His pants are missing.
请在第____处填上正确答案。 A) that B) this C) one D) it
根据听到的内容作答____. A) Changing the way of spraying crops. B) Buying some outdoor insect lamps. C) Using a combination of three insecticide. D) Trying to attract new insects onto the crops. Passage Three
相邻两座二级耐火等级的多层民用建筑,相邻外墙为不燃烧体且无外露的燃烧体屋檐,每面外墙上未设置防火保护措施的门窗洞口不正对开设,且面积之和小于等于该外墙面积的5%时,其防火间距至少应为下列何值?()