UNIT 5 WORKING THE LAND
Part 1 Reading and Thinking
基础过关练
Ⅰ.单词拼写
1.His dream finally became a (事实).
2.She has to (克服)great difficulties to make a life in a new city.
3.Valentino is keen to e (名人)parading his clothes on big occasions.
4.He worked very hard toa his goal.
5.Thec way of farming has been challenged by modern technology.
6.Solar energy has been ud tog electricity in some countries.
7.He will read for pleasure during thel time.
8.Organic farmers turned to natural means tob crop yield.
9.Many people are out of work due to the economicc .
10.The new finding has attracted bothd and international attention.
11.She is an easy-going person with charmingc .
Ⅱ.选词填空
care for,dream up,in spite of,be comprid of,far from
1.As a vegetarian, he didn't meat.
2.The community many ethnic minorities.
3.They always some new excus for the train's arriving late.
4.With 10 guests to come, 6 chairs are enough.
5.She made a life in the capital city great difficulties.
Ⅲ.单句语法填空
1.People in dry areas suffer from a (short)of water.
2.The (consume)of plastic products is threatening the environment.
3.His theory was bad on fal (assume).
4.The director (vision)an isolated life in his last movie.
5.Rearchers are (devote)to finding a cure for cancer.
6.A lack of (convince) evidence led to the failure of the ca.
7.His muscle (strain)while he was taking exerci.
Ⅳ.完成句子
1.估计已经有10,000美元花在了农业研究上。
10,000 dollars has been spent on agricultural rearch.
2.让游客们印象深刻的是优美的风景。
is the picturesque scenery.
3.他成功的演艺事业使他富有。
His此曲只应天上有 successful acting career .
4.他成功地解决了公司面临的危机。
He facing the company.
Ⅴ.课文语法填空
磨的拼音
Known as the “father of hybrid rice”, Yuan Longping is one of China's 1 (famous) scientists, who considers himlf a farmer 2 his fame and influence. 3 (tackle) the crisis of food 4 (short), he attended Southwest Agricultural College and made up his m
ind to study agriculture. Then as a rearcher, he was devoted to finding 5 approach to boosting yields without expanding the area of land. 6 (overcome) enormous difficulties, he developed the first hybrid rice in the world that could be ud for farming in 1974, which made 7 possible for farmers to expand their output 8 (great). Not only has his innovation helped to feed China, but it资产负债表格式 9 (alleviate)竹影阅读答案 hunger in other 冷门专业countries depending on rice like India and Vietnam. Given his great contribution, he has received numerous awards both in China and abroad. In spite of being wealthy, he cares little for celebrity or money and makes large donations to support agricultural rearch. Old 10 he is, he is still working hard to fulfill his dream.
1. 2. 3. 4. 5.
6. 7. 8. 9. 10.
能力提升练
Ⅰ.阅读理解
A
(2020安徽合肥一六八中学高二上周考)
Like people, plants experience stress. And also, like people, the respon to that stress can determine success.
Bad environmental conditions, such as drought, flood, heat and other stress,单位性质怎么填 affect yields(产量) more than crop pests and dias. “We are trying to find a way to equip plants with the ability to tolerate environmental stress and maintain high yields”, said Stephen Howell, a professor of genetics and cell biology.
“Plant cells produce proteins (蛋白质) and ship them to different parts of the cell. Under normal conditions, the proteins are folded into their 订婚英语normal, healthy structures as they are produced. When a plant is under stress, its cells produce poorly folded or unfolded proteins. Then a built-in system ns this and ts off an alarm in the cell,” said Howell.
In respon to the alarm, another protein (IRE1) starts working and creates a different process which activates (激活) the stress respon genes who products bring about defensive measures that help the plant survive.
“As it turns out, respons that are activated under stressful conditions actually inhibit the growth of plants,” said Howell. “This allows them to prerve为政以德 their energy to survive the stressful conditions.”
“For plants in the wild, this respon is a help for survival”, he said. In production of agricultural crops, however, this respon reduces yields.
“You don't want crop plants to stop growing,” Howell said. “You want them to continue to grow and produce more even though they are under stress.”
“With the new understanding of this stress respon, the next step may be to silence the alarm system”, said Howell. “What may be important is to disable some of the stress respons. That may make the plant more productive under stressful conditions.”
