They've kept up a friendship with the teacher whom they were at school _____ twenty years ago. 

A. with    B. about    C. since    D. till

A


解析:

易錯(cuò)選B或C, whom在這里指代the teacher,因此定語(yǔ)從句可還原為： They were at school／with the teacher twenty years ago.

練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目：高中英語(yǔ) 來(lái)源：貴州省五校聯(lián)盟2012屆高三第三次聯(lián)考英語(yǔ)試題 題型：050

閱讀下列短文，從每題所給的四個(gè)選項(xiàng)中選出最佳選項(xiàng)。

　　We know, painkillers in a tablet can make your headache go away, and antibiotic from a tube can prevent your cuts from becoming infected．Can medicine come in chicken eggs? A team of scientists from Scotland says “yes．” They've kept some special chickens that lay eggs with disease-treating drugs inside．

　　These drugs are made of molecules called proteins．Animals make thousands of proteins-they're the main ingredients(成分)in skin, hair, milk, and meat．Since animals can make proteins easily, they're good animals for making protein drugs．

　　Researchers have already made cows, sheep, and goats that pump out protein drugs in their milk．But chickens are cheaper to take care of, need less room, and grow faster than these other animals．“Those qualities could make chickens a better choice to become living drug factories．” says Simon Lillico of the Roslin Institute near Edinburgh, Scotland．

　　Lillico and a team of researchers changed chickens' DNA-the code that tells cells how to make proteins-so that the birds' cells made two protein drugs．One drug can treat skin cancer, and the other treats a nerve disease called multiple sclerosis．

　　The scientists changed the chickens' DNA so that the birds made these drugs only in their egg whites．This protects the chickens' bodies from the drugs' possible harmful effects and makes it easy for scientists to collect the drugs．

　　These special chickens can pass on their drug-laying abilities to their chicks．So far, the Scottish researchers have kept five generations of drug-producing chickens．But the scientists need to improve these chickens．The chickens don't make enough drugs to treat people yet．Once the researchers perfect their technique, you might eventually take your medicine from chicken eggs．

(1)

What is the best title of the passage?

[　　]

A．

Animals and Protein Drugs．

B．

Medicine Packaged in Various Forms．

C．

A Scotland Scientist and His Chickens．

D．

Chickens：a Better Choice of Living Drug Factories．

(2)

Which of the following is Not True according to the passage?

[　　]

A．

It takes much shorter time for chickens to grow than cows, sheep and goats．

B．

Compared to cows, sheep and goats, chickens are less expensive to be raised．

C．

Chickens can produce the best quality of drugs among the drug-producing animals．

D．

Chickens are smaller in size than cows, sheep and goats and therefore need less room．

(3)

Why did the chickens make the drugs only in the egg whites?

[　　]

A．

Because it will help to collect the drugs easily．

B．

Because it will not change the DNA of the chickens．

C．

Because it will be easy for the patients to take the drugs．

D．

Because it will prevent possible harmful effects on the patients．

(4)

What can be inferred from the passage?

[　　]

A．

Scottish researchers have kept five more drug-producing chickens．

B．

This technique still needs improving so as to satisfy the normal application．

C．

In the future people with diseases will take eggs instead of pills．

D．

The chicks need to be improved so as to carry the same ability as their parents．

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源： 題型：單選題

They've kept up a friendship with the teacher whom they were at school _____ twenty years ago.


  1. A.
    with
  2. B.
    about
  3. C.
    since
  4. D.
    till

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源： 題型：

第二卷

第三部分 寫作(共三節(jié), 滿分55分)

第一節(jié) 單詞拼寫 (共10小題; 每小題1分, 滿分10分)

根據(jù)下列句子及所給漢語(yǔ)注釋或首字母,寫出空缺處各單詞的正確形式. (每空只寫一詞)

66.He collected a lot of ______________(各種各樣的) foreign stamps.

67. They’ve kept up their ___________(友誼) for 20 years since they came here.

68. I was late for the lecture this morniong,so I a_____________ to my teacher.

69. We must make efforts to take exercise for the ____________(利益) of our health。

70. He was ____________(禁止) to talk to her.

71. Can you tell me who will be ___________(負(fù)責(zé)) for this accident?

72. The sailors made a v________ across the Pacific two years ago.

73. We were c___to know where she had gone because we had something important to discuss with her.

74. The captain g_______all the soldiers before him ,telling them to get ready for the fight.

75. They were lost at sea, at the m_________ of wind and weather..

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：福建省期末題 題型：閱讀理解

     Over the years, the devoted volunteers of Save-A-Landmark have helped to protect dozens of
interesting landmarks. They've kept the World's Largest Rocking Chair, in Mississippi, from wearing out.
They've repaired the National Civil Rights Museum, in Memphis, Tennessee. They've even helped to
restore(整修) the Birthplace of the Ice Cream Sundae, in Two Rivers, Wisconsin.
     Now, ten years later, Save-A-Landmark is celebrating its 10th anniversary(周年紀(jì)念日) by saving
President Abraham Lincoln's Cottage, in Washington, D.C. President Lincoln's Cottage is the first
Save-A-Landmark site to be located(位于) in the nation's capital. About 50 volunteers joined in the
event, which took place on September 16.
     One of those volunteers was actor Sam Waterston, of NBC's Law& Order. Waterston has acted
Lincoln on stage and on screen. Even though he has become an expert on the nation's 16th president,
Waterston says he still couldn't believe how amazing Lincoln's Cottage was.
     "This home is truly one of the better kept secrets about the man," Waterston told TFK. "He spent a
quarter of his presidency(1861-1865) here, and he worked on the Emancipation Proclamation here.
Even though it was like a summer home, he did a lot of important work here. It's a great place for kids
to learn more about Lincoln's life."
     Hampton Hotels created Save-A-Landmark in April 2000. Judy Christa-Cathey is a manager for the
hotel chain. She was especially excited about the Lincoln's Cottage project. "I grew up in Illinois, the
Land of Lincoln," she says. In ten years, Save-A-Landmark has restored 54 sites in 45 states. Now
Landmark can add another Landmark to the list: the famous house of one of the country's most popular
presidents.
1. What do the three landmarks have in common in Paragraph1?
A. They are important.
B. They are interesting.
C. They are funny.
D. They are ancient.
2. In the past 10 years, the volunteers of Save-A-Landmark have protected _________.
A. no landmark in the capital
B. a few landmarks in the capital
C. dozens of landmarks in the capital
D. hundreds of landmarks in the capital
3. According to the text, Lincoln lived in Lincoln's Cottage for ________.
A. Several months
B. a summer
C. About two years
D. about one year
4. Lincoln's Cottage project became Save-A-Landmark's _________ restored site.
A. fifty-fourth
B. forty-sixth
C. forty-fifth
D. fifty-fifth
5. Which would be the best title for the passage?
A. Creating Save-A-Landmark
B. Lincoln's Cottage
C. Saving Lincoln's Cottage
D. Save-A-Landmark 10th anniversary

查看答案和解析>>

同步練習(xí)冊(cè)答案