在生态系统中,碳元素在无机环境和生物群落之间循环的主要形式是()
A.二氧化碳
B.碳酸盐
C.碳酸
D.葡萄糖
参考答案:A
异丁酰溴
Politician: Pundits claim that by voting for candidates who promise to cut taxes, people show that they want the government to provide fewer services than it has been providing. By that reasoning, however, people who drink too much alcohol at a party in the evening want a headache the next morning. Which of the following could replace the statement about people who drink too much without undermining the force of the politician’s argument
A.People who spend more money than they can afford want the things they spend that money on.
B.People who seek different jobs than they currently have do not want to work at all.
C.People who buy new cars want to own cars that are under manufacturer’s warranty.
D.People who decide to stay in bed a few extra minutes on a workday morning want to have to rush to arrive at work on time.
E.(E) People who buy lottery tickets want the economic freedom that winning the lottery would bring.