题目内容

One-third of the area ________ covered with trees. About seventy percent of the trees _______ been planted recently.

A．is; has

B．is; have

C．are; have

D．are; has

解析试题分析：考查主谓一致：当主语被分数或百分数修饰时，谓语和后面的名词一致，第一空One-third of +单数名词+单数谓语，第二空seventy percent of +复数名词+复数谓语，句意：三分之一的地区被绿树覆盖。已经种植了大约百分之七十的树木。选B。
考点：考查主谓一致
点评：主谓一致的考点较多，要在理解的基础上加以记忆，多练习加以巩固。这里考查的是如果当主语被分数或百分数修饰时，谓语和分数或百分数后面的名词一致。

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ple — their clothes, ideas, or languages—has changed as much as what they eat. The original chocolate drink was made from the seeds of the cocoa tree(可可树)by South American. Indians. The Spanish introduced it to the rest of the world during the 1500’s. And although it was very expensive, it quickly became fashionable. In London, shops where chocolate drinks were served became important meeting places. Some still exist today.
The potato is also from the New World. Around 1600, the Spanish brought it from Peru to Eu??rope, where it soon was widely grown. Ireland became so dependent on it that thousands of Irish peo??ple starved when the crop failed during the "Potato Famine (饥荒)" of 1845—1846, and thousands more were forced to leave their homeland and move to America.
There are many other foods that have traveled from South America to the Old World. But some others went in the opposite direction. Brazil is now the world’s largest grower of coffee, and coffee is an important crop in Colombia and other South American countries. But it is native to Ethiopia, a country in Africa. It was first made into a drink by Arabs during the 1400’s.
according to an. Arabic legend, coffee was discovered when a person named Kaldi noticed that his goats were attracted to the red berries on a coffee, bush. He tried one and experienced the " wide-awake" feeling that one third of the world’s population now starts the day with.

1.
according to the passage, which of the following has changed the most in the last 500 years?
1. A.
  Food.
2. B.
  Clothing.
3. C.
  Ideology.
4. D.
  Language.
2.
The word "some" in the last sentence of the first paragraph refers to________.
1. A.
  some cocoa trees
2. B.
  some chocolate drinks.
3. C.
  some shops
4. D.
  some South American Indians
3.
Thousands of Irish people starved during the " Potato Famine" because________
1. A.
  they were so dependent on potatoes that they refused to eat anything else
2. B.
  they were forced to leave their homeland and move to America
3. C.
  the weather conditions in Ireland were not suitable for growing potatoes
4. D.
  the potato harvest was bad
4.
according to the passage, which of the following statements is NOT true?
1. A.
  One third of the world’s population drinks coffee.
2. B.
  Coffee is native to Colombia.
3. C.
  Coffee can keep one awake.
4. D.
  Coffee drinks were first made by Arabs.

according to the passage, which of the following has changed the most in the last 500 years?

The word "some" in the last sentence of the first paragraph refers to________.

Thousands of Irish people starved during the " Potato Famine" because________

according to the passage, which of the following statements is NOT true?

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