ou. A service charge is generally not included except in some of the larger, more expensive places. If the order is small - a cup of coffee at a lunch counter, or something of the sort - a tip is not usually expected.
1. According to the passage, the practice of giving tips
A) is consistent throughout the world.
B) varies from place to place in the USA.
C) is consistent in large towns in the USA.
D) is consistent in small towns in the USA.
1. How many diseases are known to attack wheat?
A) Around 30,000
B) Around 140
C) Around 29,960
D) Around 40
2. According to this passage, which of the following would a plant disease result in if left unchecked?
A) A world war.
B) Border conflicts.
C) Rations of grain and meat.
D) Social upheavals.
3. What is the main idea of the second paragraph?
A) Some plants have relative immunity to a great many diseases, while others have a
susceptibility to them.
B) The tolerance of a particular plant changes as the growing condition change.
C) A blight killed virtually every chestnut tree in North American.
D) A blight may be a national infection.
4. According to the passage, some plant diseases can be prevented by
A) killing parasites.
B) inoculation
C) Killing insects
D) improving growing conditions
5. Which of the following statements is not true?
A) Some plant diseases may be caused by bacteria.
B) Some plant diseases may be caused by pathogens.
C) Some plant diseases may be caused by fungus.
D) Symptoms are always helpful in identifying diseases.
Keys: DDABD
1. How many diseases are known to attack wheat?
A) Around 30,000
B) Around 140
C) Around 29,960
D) Around 40
2. According to this passage, which of the following would a plant disease result in if left unchecked?
A) A world war.
B) Border conflicts.
C) Rations of grain and meat.
D) Social upheavals.
3. What is the main idea of the second paragraph?
A) Some plants have relative immunity to a great many diseases, while others have a
susceptibility to them.
B) The tolerance of a particular plant changes as the growing condition change.
C) A blight killed virtually every chestnut tree in North American.
D) A blight may be a national infection.
4. According to the passage, some plant dise
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