题目内容

Having lived in China for 8 years, Helen has a good ____________ of both English and Chinese.
A．abilityB．guidanceC．commandD．program
C

试题分析：考查名词和词组：A. ability能力，B. guidance 指导，C. command命令，掌握，have  a good command of“精通”，D. program节目，课程，句意：在中国生活了8年，海伦精通英语和汉语。选C。
练习册系列答案
相关题目
---Is that word ____ in the dictionary?
---No. It seems a newly-formed word.
A．writtenB．readC．printedD．covered
A professor of environmental health and his students began studying the idea of rooftop gardening for cities. “I think vertical farming is an idea that can work in a big way,” said Despommier.
Why would we want to build skyscrapers filled with vegetables when we’ve been farming on the ground for 10,000 years? Because as the world’s population grows—from 7 billion now to as much as 9 billion by 2050—we could run out of productive soil and water. Most of the population growth will occur in cities that can’t easily feed themselves. And the fact is that modern agriculture as well as everything associated with it – chemical fertilizers and transportation full of carbon—is a significant contributor to climate change, and suddenly vertical farming doesn’t seem so magic in the sky.
“Vertical farming could allow food to be grown locally and sustainably,” says Glen Kertz, CEO of Valcent. The result saves space — vital in urban areas — and allows farmers to irrigate and fertilize with far less waste.
At Valcent’s El Paso lab, crops grow in rows on conveyor belts. Moving them gives the plants the precise amount of light and nutrients needed, letting them grow 15 times as much vegetable as on a normal farm with 5% of the water that traditional agriculture does.
Despommier plans to build a 30-story, city-block-size vertical farm that would have transparent walls to maximize sunlight and would produce enough food for 50, 000 people. But it would cost hundreds of millions to build a full-scale skyscraper farm. That’s the main drawback: construction and energy costs would probably make vertically raised food more costly than traditional crops.
Though the working mother is very busy, she _____ an hour every day to spend with her daughter.
A．set outB．set offC．set aboutD．set aside
The little boy was the only one who ________ the earthquake in this village, and the government sent him to a city school after that.
A．experienced B．escapedC．survivedD．suffered
Who would you rather ______ with the teacher about the problem?
A．talkingB．talkC．have talkedD．have talk
Don't mention that at the beginning of the story, or it may _____ the shocking ending.
A．give outB．give offC．give upD．give away
It was so dark in the cinema that I could hardly ______ my friend.
A．turn outB．bring outC．call outD．pick out
It is important to have your eyes examined regularly to check for any sign of eye disease that may not have any ________.
A．symptomB．shadowC．treatmentD．convenience

违法和不良信息举报电话：027-86699610 举报邮箱：58377363@163.com

精英家教网