根据短文内容，从题PLC培训学校,所给的A、B、C、D个选项PLC培训学校,，选出正确PLC考证培训，并在答题卡上将该项涂黑。（共5小题，每小题2PLC培训学校,，学PLC技术来阳光PLC培训学校,10PLC培训学校,）
( B ) 61. The passage is mainly about the problem of the __________ of the USA.
A. families B. old people C. children D. population
( D ) 62. What does the underlined word “families” in the first paragraph really mean?
A. Family members. B. Parents and their children.
C. People living together. D. Children.
( A ) 63. The number of the old people in the USA is _________.
A. becoming bigger B. becoming smaller
C. unchangeable D. changeable
( C ) 64. Why do a lot of old people want to live in the south?
A. Because the weather there is cold.
B. Because the south is beautiful.
C. Because the weather there is warm.
D. Because they hope to live near their family.
( A ) 65. All the families in Sun City must have one person ______.
A. over the age 50 B. over the age 18
C. under the age 18 D. under the age 50
C
Plants are very important living things. Life couldn’t go if there were no plants. This is because plants can make food from air, water and sunlight. Animals and man cannot make food from air, water and sunlight. Animals get their food by eating plants and other animals. So animals and man need plants in order to live. This is why we find that there are so many plants around us.
If you look carefully at the plants around you, you will find that there are two kinds of plants: flowering plants and non-flowering plants.
Flowering plants can make seeds(种子). The seeds are protected by the fruits. Some fruits have one seed, some have two, three or four, and some have many seeds. But a few fruits have no seeds at all. An ple of a fruit without seeds is the banana fruit.
Most non-flowering plants don’t grow from seeds. They grow from spores(孢子). Spores are very, very small. Some spores are so small and light that they can float(漂浮) in the air. We may say that spores are quite the same as the seeds. When these spores fall on wet and shady(阴凉的) places, they usually grow into new plants.
根据短文内容，从题PLC培训学校,所给的A、B、C、D个选项PLC培训学校,，选出正确PLC考证培训，并在答题卡上将该项涂黑。（共5小题，每小题2PLC培训学校,，学PLC技术来阳光PLC培训学校,10PLC培训学校,）
( D ) 66. Why are there so many plants around us?
A. Because plants can make food from air, water and sunlight.
B. Because animals only feed on plants.
C. Because animals and man can make food.
D. Because animals and man need plants to live.
( B ) 67. Which of the following is NOT true?
A. Plants have two main types: flowering plants and non-flowering plants.
B. All fruits have seeds in them.
C. Seeds are protected by the fruits.
D. Some plants grow from spores.
( C ) 68. The word “non-flowering” in this passage means ____________.
A. 开花的B. 有花的C. 无花的D. 多花的
( D ) 69. According to the passage, where do most non-flowering plants grow?
A. In the air.B. In some places with enough sunlight.
C. In the water. D. In wet and shady places.
( A ) 70. The best title of the passage is _________________.
A. PlantsB. Flowering Plants C. SporesD.Non-flowering Plants
D
For better eyesight(视力), doctors advise limiting(限制) the hours of screen time and encourage having enough eye resting time.
However, another study shows that sitting in front of computer or TV screens for long hours is not the only reason for myopia(近视). An Australian research team studied young children in Sydney and Singapore to find the reasons for myopia.The research team found that there were less children who had myopia in Sydney than those in Singapore, even though they spent more time in front of computer and TV screens. The major finding is that children in Sydney spend longer hours on outdoor sports than those in Singapore.
Indoor and outdoor sports both make the eyes pay attention to more distant(远处的) objects, which stops the eyes from changing original shape. But outdoor sports may be better than indoor sports for myopia. Because natural light is good for eye growth and vitamin(维他命) D from the sunlight might be useful to it.Many doctors suggest that every child get its first eye test when he/she is about two and half years old, and even if his/her sight seems good enough. It is necessary for myopic(近视的) children to wear glasses to stop headaches, trouble reading and so on. It is also important that schools invite doctors to test their students’ eyes.
If that is not possible, school teachers should at least encourage parents and children to have regular eye ination and wear glasses. And parents should remember not only to limit the total screen time for their children, but also to encourage them to spend time outdoors.
( A ) 71. What did the Australian research team study for?
A. To find the reasons for myopia.
B. To find the ways to treat myopia.
C. To learn to choose right glasses.
D. To improve children’s eyesight.
( D ) 72. Why are there fewer children with myopia in Sydney than those in Singapore?
A. Because the children in Sydney watch TV less.
B. Because the children in Sydney have more eye resting time.
C. Because the children in Sydney use computer less.
D. Because the children in Sydney do more outdoor sports.
( C ) 73. What is good for eye growth according to the passage?
A. Natural light. B. Vitamin D.
C. Natural light and Vitamin D. D. The sun.
( B ) 74. Which of the following is true?
A. Children should have eye tests as soon as they reach school age.
B. Looking more at distant objects can help the eyes keep their original shape.
C. Doing outdoor sports with no glasses is good for myopic children.
D. Children should limit their time in the sun to protect their eyes.
( C ) 75. The passage mainly tells us .
A. the children in Sydney spend more time in front of screens
B. the children in Singapore like outdoor sports
C. doing outdoor sports and limiting the hours of screen time are good for eyes
D. it’s important to test students’ eyes
2011玉溪英语PLC培训班PLC培训学校,及参考PLC考证培训
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