平屋顶的坡度一般小于（）。A.5%B.4%C.3%D.2%

Never in her life ____ in such an important party, where she saw so many pop stars.

A.Lisa took part

B.did Lisa take part

C.Lisa was taken part

D.was Lisa taken part

The description of the past natural environment is important in that

A．it is one part of human history.

B．it should be included in the history of the universe.

C．it can partly explain the way of life of the people in the past.

D．it decided the human history.

The description of the past natural environment is important in that

A. it is one part of human history:

B. it should be included in the history of the universe.

C. it can partly explain the way of life of the people in the past.

D. it decided the human history,

Which of the following statements is NOT right？

A．Laughter is a natural part of life.

B．Human beings are not born to be able to laugh.

C．Human beings can learn to laugh at any time of life.

D．Laughter is a kind of medicine, so to speak.

A、fate

B、morality

C、social conventions

D、environment

A、we should hold fast to life but not so fast that you cannot let go

B、people grow only when they experience losses

C、it’s natural for us to loss things in the process of life

D、life is a process of losing things for people

Which of the following does contribute to the idea of ageism？

A．Death is regarded as a natural part of the life cycle.

B．The old individuals are not seen as productive in their societies.

C．Modernization has decreased a continuous process of life and death.

D．Older adults receive more respect for their wisdom and experience.