题干

阅读下文:在通常情况下,硫化氢是一种没有颜色、具臭鸡蛋气味的有毒气体,比空气重,能溶于水。在空气中点燃硫化氢气体有二氧化硫和水生成。硫化氢的实验室制法是用块状硫化亚铁和液体状稀硫酸反应,则属硫化氢的化学性质的是(   )

A:无色

B:有臭鸡蛋气味

C:比空气重

D:能燃

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答案(点此获取答案解析)

D

同类题2

语法填空

    Henry was an office____(work) in a big city. He worked very hard and enjoyed traveling in his holidays.

    He usually went to the seaside, but one year he saw____advertisement in a newspaper. “Enjoy country life. Spend a few weeks at West Hill Farm. Good food, Fresh air, Horse riding, Walking, Fishing, cheap and interesting.” “This ____(sound) a good idea,” he thought. “I'll spend a month at West Hill Farm. I think I can enjoy horse riding, walking and fishing. They'll make a change from ____(sit) by the seaside and swimming.”

    He wrote to the farmer. In the letter he said that he would like to spend all of July there. Then on the first day of July, he left ____West Hill Farm.

But four days later, he returned home.

    “What was wrong ____West Hill Farm?” his best friend, Ed, asked him.

    “Didn't you enjoy country life?” “Country life was very good,” Henry said.

    “But there was another problem.”

    “Oh. What?”

    “Well,” he said, “the first day I was there a sheep died, and we had roast mutton for dinner.”

    “What's wrong with that?” Ed asked. “Fresh meat is the best.”

    “I know, but on the____(two) day a cow died, and we had roast beef for dinner.”

    “How ____(luck) you are!”

    “You don't understand,” Henry said. “On the third day a pig died and we had roast pork for dinner.”

    “A different meat every day,” Ed said____(loud), “and what are you complaining!”

    “Let me finish,” Henry said. “on the fourth day the farmer____(dead), and I didn't dare (敢) stay for dinner!”