(C)
Most people around the world are right-handed. This also seems to be true in history. In 1799, scientists studied works(作品) of art made at different times from 1, 500 B. C. to the 1950s. Most of the people shown in these works are right-handed, so the scientists guessed that right-handedness has always been common through history. Today, only about 10% to 15% of the world's population is left-handed.
Why are there more right-handed people than left-handed ones? Scientists now know that a person's two hands each have their own jobs. For most people, the left hand is used to find things or hold things. The right hand is used to work with things. This is because of the different work of the two sides of the brain (大脑). The right side of the brain, which makes a person's hands and eyes work together, controls(控制) the left hand. The left-side of the brain, which controls the right hand, is the centre for thinking and doing problems. These findings show that more artists should be left-handed, and studies have found that left-handedness is twice as common among artists than among people in other jobs.
No one really knows what makes a person become right-handed instead of left-handed. Scientists have found that almost 40% of the people become left-handed because their main brain is damaged(损害) when they are born. However, this doesn't happen to everyone, so scientists guess there must be another reason (原因) why people become left-handed. One idea is that people usually get right-handed from their parents. If a person does not receive the gene (基因) for right-handedness, he/she may become either right-or left-handed according to the chance (偶然) and the people they work or live with.
Though right-handedness is more common than left-handedness, people no longer think left-handed people are strange or unusual. A long time ago, left-handed children were made to use their right hands like other children, but today they don't have to.
66. After studying works of art made at different times in history, the scientists found .
A. the art began from 1, 500 B. C.
B. the works of art ended in the 1950s
C. most people shown in the works of art are right-handed
D. most people shown in the works of art are left-handed
67. How many people in the world are left-handed now?
A. Less than one sixth.
B. More than a half.
C. About 40%.
D. The passage doesn't tell us.
68. What is the left hand for most people used to do?
A. It's used to find or hold things.
B. It's used to work with things.
C. It's used to make a person's eyes work together.
D. It's the centre for thinking and doing problems.
69. According to (根据) the passage, which of the following is NOT true?
A. No one really knows what makes a person become right-handed.
B. Left-handedness is cleverer than right-handedness.
C. Today children are not made to use their right hands only.
D. Scientists think there must be some reason why people become left-handed.
70. The best title(标题) for this passage is .
A. Scientists' New Inventions
B. Left-handed People
C. Which Hand
D. Different Brains, Different Hands.
Ⅵ．碢LC培训学校,巍⒋世嘧唬焊菥湟猓美ê拍谒ゴ实氖实毙问教羁铡Ｓ械男枰又驶虿欢ㄊ椒拧�(5PLC培训学校,)
71. The (clean) clean the roads early in the morning.
72. Tom was the (five) runner past the finishing line.
73. You'd better (not drink) too much water before you go to bed.
74. The old man looked at them ( angry) and couldn't say a word.
75. The panda has been (die) for about two months.
76. In summer it (rain) little in this city, so everyone must save water.
77. Look! The Greens (get) ready for the journey.
78. So far, most of the children (see) the film "Harry Potter".
79. There (be) a talk on science in our school tomorrow afternoon.
80. I (forget) the time for the meeting, so I was late.
Ⅶ．改写句子：按括号PLC培训学校,的要求完成改写后的句子，每空碢LC培训学校,�(10PLC培训学校,)
81. Alice does the shopping on Sundays. (改为否定句)
Alice the shopping on Sundays.
82. He spent a whole morning cleaning the room. (就划线部PLC培训学校,提问)
he cleaning the room?
83. "Did you sleep well last night?"David asked her. (改为复合句，句意不变)
David asked her well last night.
84. The foreigners want to know how they can learn Chinese Kongfu well. (改写句子，句意不变)
The foreigners want to know learn Chinese Kongfu well.
85. There were not any telephone calls made in English between the two countries years ago. (改写句子，句意不变)
the telephone calls in English the two countries years ago.
86. Before talking, he told me his name and I told him my name, (改写句子，句意不变)
We before talking.
2012济南英语模拟PLC培训班及PLC考证培训
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