不是操作系统关心的主要问题是（）。A．管理计算机裸机 B．设计、提供用户程序与计算机

补写出下列名句名篇中的空缺部分。

①________________，________________，冰泉冷涩弦凝绝，凝绝不通声暂歇。（白居易《琵琶行》）

②骐骥一跃，不能十步；________________ ，________________。（荀子《劝学》）

③巫医乐师百工之人，君子不齿， ________________ ，________________。（韩愈《师说》）

构成产品质量法律责任的条件是（）。

A、产品质量不合格

B、造成他人损害，即存在损害事实

C、产品质量不合格与损害事实之间存在因果关系

D、以上三条都是

Did you know it takes 21 days to form a good habit? Research shows that when you “stick to something” for three weeks you are more likely to reach your goals. This is important for language learners or anyone who wants to make a change.

People who try something new often “fall off the wagon”. Whether it is a plan to lose weight or a decision to learn something, life often gets in the way. Those who make up their minds to learn English are more likely to succeed if they have a short-term goal at the beginning.

How to make learning English a habit:

Set a specific goal

Example: Break up the four main skills (listening, speaking, reading and writing) and plan to do one hour of practice in each area at the same time every day.

Find a learning partner

Choose a friend to keep you moving towards your goal. Your friend doesn’t need to be a language learner. He can be someone who wants to start exercising. He can be someone who wants to write a novel. It is best if you both have a goal.

Write out how your life will change when you reach your goal

If I improve my English, I will be able to get a better job.

If I take the TOEFL test, I will be able to get into university.

If I improve my pronunciation, my customers will understand me.

Keep track of your progress

Keep track of your effort in a notebook or online list. Share your progress list with your partner.

When you reach 21 days, reward yourself! Go out for a dinner or a movie or buy yourself a treat. It will be easier to stay on your program now that you are in the habit. If you ever fall off again, put yourself back on the 21-day challenge.

65. What can be inferred from the passage?

A. Life sometimes makes people give up their plans or decisions.

B. An English learner should find a language learner as a partner.

C. A long-term goal is of importance in forming a good habit.

D. It is necessary to spend an hour on each language skill every day.

66. Why does the author advise an English learner to reward himself when he reaches 21 days?

A. Because he should share his progress with his partner.

B. Because he has had a good knowledge of English.

C. Because he would put himself on another 21-day challenge.

D. Because he has formed a good habit of learning English.

67. The best title of the passage would be “________”.

A. Taking 21 days to form a good habit

B. A research on learning English

C. Make learning English a habit

D. Setting a goal in life

下列约束中能确保一个函数依赖是完全非平凡函数依赖的是______。

A) 仅当其右边的属性集是左边属性集的子集
B) 仅当其右边属性集中的属性都不属于左边的属性集
C) 仅当其右边属性集中至少有一个属性不属于左边的属性集
D) 仅当其右边属性集中的属性都属于左边的属性集

商业银行实行自主经营，自担风险,自负盈亏,自我约束。117、