下图中的光学现象及其说法中正确的是() A.图a中,漫反射的光线杂乱无章,因此

题型:选择题

问题:

下图中的光学现象及其说法中正确的是                      (    )

A.图a中,漫反射的光线杂乱无章,因此不遵循光的反射定律

B.图b中,木工师傅观察木板是否光滑平整利用了光沿直线传播的性质

C.图c中标示的是近视眼的成像情况,应该配戴凹透镜来矫正

D.图d表示太阳光经过三棱镜色散后的色光排列情况

考点:光的直线传播的应用
题型:选择题

阅读理解。

     We all need to exercise. Doctors say it is good for us. It makes your heart and body strong. It also

gives you more energy. And you will feel better about yourself. It's best to exercise twice a week.

Twenty minutes each time is enough.

     There are many ways to exercise. You can walk, run, play sports, or swim. Many people go to

special places to exercise.

     They are ca1led"fitness centers." These places have a lot of equipment. Some People buy equipment

for their homes. But it is very expensive.

     Exercising can be fun. Friends can exercise together at a fitness center. Or, they can play sports

together. How do you exercise?

1. What is the main idea? [ ]

A. Exercise equipment is expensive.

B. Playing sports is a good way to exercise.

C. Every person shou1d exercise.

2. We should exercise _____. [ ]

A. every day

B. 20 minutes a week

C. twice a week

3. At fitness centers, _____. [ ]

A. you can buy expensive equipment

B. people can do many kinds of exercising

C. it is very expensive

4. Which of these kinds of exercising is not in the article? [ ]

A. Dancing.

B. Swimming.

C. Sports.

5. Which of these sentences about exercising is true? [ ]

A. Exercising is expensive.

B. Exercise is good for your heart.

C. Only doctors exercise.

题型:选择题

既安神,又祛风的药是()

A.夜交藤

B.合欢皮

C.珍珠

D.酸枣仁

E.柏子仁

题型:选择题

2008年12月13日,中日韩领导人会议在日本福冈举行,这是三国首次单独举行领导人会议。会议发表的(三国伙伴关系联合声明)标志着中日韩合作进入了新的发展阶段。三国重视相互关系的发展表明:   [ ]

A.国家利益是国际关系的决定性因素

B.三国地缘相近、根本利益一致 

C.中日韩三国是亚洲最重要国家

D.三国都实行独立自主的和平外交政策 

题型:选择题

患者,女,35岁。有胃溃疡。吐血黯淡,大便漆黑,面色苍白,头晕心悸,神疲乏力,纳少,舌淡红,苔薄白,脉细弱。其证型是

A.肝气郁结
B.脾不统血
C.气随血脱
D.胃中积热
E.肝火犯胃

题型:选择题

原始记录是工业企业从事各项管理工作的()。

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