茶道是（）的艺术。 A.综合性 B.生活中 C.偶然性 D.由无至无

有关健康牙槽骨的说法错误的是()

A．牙周储备力大

B．骨小梁排列紊乱

C．对力的承受力高

D．对咬合力有动态反应

E．骨质致密

（）是提供产品的组织或个人。

A.供方

B.组织

C.相关方

D.顾客

Life is difficult.

This is a great truth, one of the greatest truths. It is a great truth because once we truly see this truth, we transcend (超越) it. Once we truly know that life is difficult — once we truly understand and accept it — then life is no longer difficult. Because once it is accepted, the fact that life is difficult no longer matters.

Most do not fully see this truth. Instead they complain about their problems and difficulties as if life should be easy. It seems to them that difficulties represent a special kind of suffering especially forced upon them or else upon their families, their class, or even their nation.

What makes life difficult is that the process of facing and solving problems is a painful one. Problems, depending on their nature, cause us sadness, or loneliness or regret or anger or fear. These are uncomfortable feelings, often as painful as any kind of physical pain. And since life causes an endless series of problems, life is always difficult and is full of pain as well as joy.

Yet, it is in this whole process of solving problems that life has its meaning. Problems are the serious test that tells us success from failure. When we desire to encourage the growth of human spirit, we encourage the human ability to solve problems, just as in school we set problems for our children to solve. It is through the pain of meeting and working out problems that we learn. As Benjamin Franklin said, those things that hurt, instruct. It is for this reason that wise people learn not to fear but to welcome the pain of problems.

小题1:The writer probably used just one short sentence in the first paragraph to ________.

A．save space

B．persuade readers

C．make readers laugh

D．get readers’ attention小题2:According to the passage, we give school children difficult problems to solve in order to________.

A．encourage them to learn

B．teach them to fear the pain of solving the problem

C．help them learn to deal with pain

D．teach them how to respect for problems小题3:From the passage, it can be inferred that _________.

A．everybody has problems

B．we become stronger by meeting and solving the problems of life

C．life is difficult because our problems bring us pain

D．people like to complain about their problems

有关单克隆丙种球蛋白病发病特点，错误的是（）。

A.疾病的突出特点是血清中存在异常增多的M蛋白

B.B细胞异常增殖

C.M蛋白主要来源于脾细胞的恶性增生

D.血清蛋白区带电泳可见特异性的M区带

E.尿液蛋白区带电泳可见特异性的M区带