柴油机机油变质的原因可能是（）。 A.气缸垫烧损 B.机油冷却器堵塞 C.机油粘度低
题型：单项选择题
问题：
柴油机机油变质的原因可能是（）。
A.气缸垫烧损
B.机油冷却器堵塞
C.机油粘度低
D.柴油机超负荷工作
题型：单项选择题
Children like to imagine they are someone else in a game. As a
parent you might never guess all the way a good imagination benefits
your child. It helps a preschooler：
Develop social skills
As children play pretend games, they explore relationship
between family members, friends and co-workers and learn more about how people communicate. Playing doctor, they imagine how physicians care for their patients. Playing house, they learn more about how parents feel about their children. Imaginative play help develop sympathy for others. If children can imagine how it feels to be left out of a game or to lose a pet, they are better able to help those in need. They become more willing to play fair, to share, and to cooperate.
Build self-confidence
Young children have very little control over their lives. Imagining oneself as builder of skyscrapers or a superhero defending the planet is inspiring to a child. It helps them develop confidence in their abilities and their potential.
Boost intellectual growth
Using the imagination is the beginning of abstract thought. Children who can see a king’s castle in a pile of sand or a delicious dinner in a mud pie are learning to think symbolically. This skill is important in school where a child will have to learn that numbers symbolize groups of objects, letters symbolize sounds, and so on.
Practice language skills
Kids who play pretend with their friends do a lot of talking. This helps increase their vocabulary, Kids who play pretend with their friends do a lot of talking. This helps increase their vocabulary, improve sentence structures and develop communication skills.
Work out fears
Playing pretend can help children work Out their fears and worries. When children role-play about the big, bad monster under the bed, they gain a sense of control over him and he doesn’t seem quite so big or so bad. Imaginative play also helps kids vent（发泄）confusing feelings they might have, such as anger toward a parent or rivalry（较劲）with a new brother or sister.
68. Which of the following can help children develop social skills in a game?
A. Imagining being a superhero. B. Preparing a delicious dinner with mud.
C. Pretending to have a talk with friends. D. Pretending to be a doctor.
69．Why can imagination build children’s self-confidence?
A．It makes them more willing to play fair.
B．It helps them gain control over themselves.
C．It helps them protect people and make much greater progress.
D．It makes them feel as if they were much more powerful than they really are.
70．Which of the following is NOT true according to the progress.
A．Playing pretend games only helps children psychologically.
B．Playing pretend games is good for children’s development.
C．While playing pretend games, children learn to get along with others.
D．Playing pretend games helps children to do well while they are in school.
71．The passage mainly tells us something about .
A．advantages of playing outdoors
B．skills in playing pretend games
C．benefits of developing your child’s imagination
D．tips on how to improve our child’s imagination