10. all of you are top students, only one will be chosen for the coming competition.
A. While B. Since
C. If D. As
10. A考查状语从句的连接词。句意：尽管你们都是很优秀的学生，但是只有一个学生将被选出来参加竞赛。while"尽管"，作这一用法时，常用于句首；since既然，因为；if是否；as 由于，随着。句意前后有转折关系，所以用while引导让步状语从句。故选A。
题目来源：2015全品语法快练高中英语新课标 > 训练2状语从句
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13. 一How was your interview for going abroad to study?
—Oh, I couldn't feel any . I hardly
understood most of the questions they asked.
A. worse B. harder
C. happier D. better
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4. John seemed puzzled about the question meant.
A. how B. why
C. what D. which
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C
Gordon Sato was born in Los Angeles in the 1920s. He learned to make corn grow in the dry and dusty soil. He later became a cell biologist. He earned many honours for his research.
In 1985， he went to Eritrea. There he noticed that camels were eating the leaves of mangrove trees(红树)growing along the coast. He planted more mangroves so they could be used to feed livestock. But at first all the new trees died. Then Gordon Sato observed that mangrove trees only grew naturally where there was fresh water some of the time. The fresh water provided minerals(矿物质)that salt water lacked. Gordon Sato found a way to provide these minerals by putting the minerals into small plastic bags at the base of each tree. Each plastic bag had a tiny hole that was very careful?ly sized.
The women in the village of Hargigo started to feed the leaves of the mangrove trees to their sheep and goats. But the animals were not produ?cing enough milk for their babies. Gordon Sato asked the villagers to grind (磨碎)the remains of fish they had eaten and spread this fish paste on the leaves. This provided protein for the sheep and goats so they could produce more milk.
Today there are more than one million mangrove trees around the vil?lage. Gordon Sato has also started a large garden in Mauritania to grow more mangrove trees. He is always looking for new projects and new ways to pay for them. "You don't have to be brilliant to do useful work. All you have to have is intelligence and determination, and you can make a contribu?tion to this world," Gordon Sato said.
9. After seeing camels eat the leaves of mangrove trees, Gordon Sato
A. wanted to study mangrove trees
B. wanted to raise more farm animals
C. decided to plant more mangrove trees
D. wanted to know why they loved mangrove tress
10.Why did the newly-planted mangrove trees die at first?
A.Because nobody helped wato therii. I
B. Because they lacked certain minerals.
C. Because they were short of salt water, ;
D Because they were too close to each other.
11. Gordon Sato asked the villagers to grind the remains of fish in order to
A. help mangrove trees grow better
B. provide protein for their animals
C. make their animals love eating leaves
D. put some kinds of minerals into fresh water
12.What Gordon Sato said in the last paragraph shows that .
A. it is not easy to make a contribution to this world
B. intelligence is more important than determination
C. we all can make a contribution to the world if we keep trying
D. we cannot make a contribution to the world if we are not brilliant
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6. He was about to leave the office for home someone knocked the door and asked for some help.
A. until B. while
C. as D. when
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14. you go, you should keep in mind is that you are a Chinese.
A. Wherever; what B. wherever; whatever C. Where; whatever D. Where; what
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19. You can't complain about being left out you don't make any effort to share
your joys and sorrows with others.
A. once B. unless
C. when D. though
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15. When you're faced with failure, you need is to take courage and try again.
A. that B. all
C. which D. it
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9. He was inspired to start again he had failed.
A. where B in which
C. when D. what
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