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【判断题】
风化作用按作用因素与作用性质不同,分为物理风化、化学风化和生物风化。A.
正确
B.
错误
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皮皮学刷刷变学霸
举一反三
【单选题】已知（1- x 3 ） 2013 =a 0 +a 1 x+…+a 2013 x 2013 ，则3a 1 +3 2 a 2 +…+3 2013 a 2013 =（ ）
A.
0
B.
1
C.
-1
D.
2 2013 -1
【单选题】A stillborn baby was delivered in the birthing suite a few hours ago. After the delivery, the family remained together, holding and touching the baby. Which statement by the nurse would assist the fam...
A.
"What can I do for you? "
B.
"Now you have an angel in heaven."
C.
"Don't worry, there is nothing you could have done to prevent this from happening."
D.
"We will see to it that you have an early discharge so that you don't have to be reminded of this experience."
【单选题】(2013·陕西，23)—Shall we go for a drink at one o'clock this afternoon? —________.Will two o'clock be OK?
A.
Sure，it's up to you
B.
Sure，no problem
C.
Sorry，I can't make it
D.
Sorry，I'm not available today
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