2. Khoảng cách giữa 2 nguyên tử C - C trong C2H6, C2H4, C2H2 tương ứng (Å) là: 1,54; 1,35; 1,21. Vậy bán kính cộng hóa trị Å của C là

Which best summarizes what scientists learned about how microbes benefit the human body? they are part of a normal human ecosystem. they have become less harmful to humans than they used to be. they process nutrients, fight disease, and accommodate change. they humans overcome the effects of antibiotics.`

Jeremy planned to read the following poem aloud: wisdom by sara teas daleit was a night of early spring, the winter-sleep was scarcely broken; around us shadows and the wind listened for what was never spoken. though half a score of years are gone, spring comes as sharply now as then— but if we had it all to doit would be done the same again. it was a spring that never came; but we have lived enough to know that what we never have, remains; it is the things we have that go. jeremy interpreted this poem to mean that certain people, places, 'and things are important to us in our lives. but as time passes, we lose those things. what technique could jeremy use when reading the poem to emphasize this idea for listeners? a. he could read the poem rapidly to show how quickly people lose what’s important to them. b. he could emphasize the rhyming pattern in each stanza to represent patterns in life. c. he could read the poem slowly to represent the changes that happen over a lifetime. d. he could raise and lower his voice to represent the good and bad things people face in life.

Afim de evitar repetições o autor utilizou várias palavras para tratar do elevador. assinale a alternativa em que todas as palavras foram usados com esse objetivo a) jaula, cabina e edifício b) carro, prisão e toca c)cabina, coração e prisão d)edifício, caixa e gaoila