题型:阅读选择 题类:常考题 难易度:普通
浙江省绍兴市柯桥区2021届九年级上学期英语期中调测试卷
Mars is an empty planet, but that could change. Someday, it might have farms where fruit and vegetables could grow.
Growing food on Mars has always seemed hard. But scientists think they have found a way to do it. They put sheets(薄膜) of material on the ground. The sheets could change the cold, dry planet into land for farming.
Robin Wordsworth worked on the sheets at Harvard University in Massachusetts. He said the sheets could let people live on another planet. On Mars, the conditions are not good, though. Most importantly, the planet is cold and dry. The soil might have polluted parts, and the air does not have much nitrogen(氮气) that plants need to grow.
The sheets do not solve all the problems. Still, they could help to set up a place for plants. The plants would grow only under the sheets. So there is less worry about harming the rest of Mars. The sheets would cover the plants.
The scientists worked with sheets about an inch thick. Those allowed light through for plants. They also warmed the ground and trapped enough heat to melt ice on Mars. Placing the sheets over icy parts of Mars could let plants alive there. Their study was printed in Nature Astronomy. The sheets could be on the ground to grow water plants and they also could be hung. That would give room to plants to grow on land below them.
Wordsworth said, "You can imagine this being used in a number of ways. It could be used for visitors to Mars. Later it could be for people who live there. However, it's a pity that the sheets are being studied in the lab."
against chance cheer wear please |
It was Sunday. Tom went to the City Stadium for a basketball match. Tom was worried because there was a traffic jam and he might be late for the match. He got off the bus and ran as fast as he could. He {#blank#}1{#/blank#} the team shirt and his number was eleven.
Tom was not a player in the match, but a fan. He retired (退役) last year and went back home. This time he had a {#blank#}2{#/blank#} to watch a match of his former (以前的) teammates in his home town. He was {#blank#}3{#/blank#} to meet them again. After running for over twenty minutes, he arrived at the stadium on time. His former teammates played {#blank#}4{#/blank#} a stronger team, but they did better. Finally they won the match. Tom {#blank#}5{#/blank#} for them loudly. After the match, Tom waited at the gate of the stadium so that he could meet his old friends as soon as they came out. It was an exciting day.
试题篮