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【单选题】
关于棘皮动物的主要特征的叙述，错误的是：
A.
棘皮动物是后口动物
B.
棘皮动物胚胎发育的初期往往是两侧对称，后期多为五辐射对称
C.
水沟系为棘皮动物所特有
D.
体表具有棘和叉棘
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参考答案：
举一反三
【简答题】My brother, Henry, has an excellent job at a bank. I couldn't (1) him (2) he told me that he had decided to give it (3) . Though I tried to make him (4) his mind, I failed (5) . "You should reconsider...
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【单选题】在中文Excel工作表的单元格中输入公式时,应先输入()号。
A.
A）’
B.
B）"
C.
C）&
D.
D）=
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【单选题】在Excel 2002工作表的单元格中，输入和处理的数据（）。
A.
必须是文字
B.
必须是数值
C.
必须是公式
D.
以上都可以
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【多选题】在Excel工作表的单元格中可输入（）。
A.
字符
B.
中文
C.
数字
D.
公式
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【单选题】假如 Excel工作表的A1单元格已经输入文本'中国人民大学'，在A2单元格输入公式'=LEFT(A1,2)'，则A2单元格显示结果为( )。
A.
2
B.
中
C.
中国
D.
大学
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【单选题】若某溶液中有Fe 2+ 、Cl - 和I - 共存，要氧化除去I - 而不影响Fe 2+ 和Cl - ，可加入的试剂是（　　）
A.
Cl 2
B.
KMnO 4
C.
FeCl 3
D.
HCl
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【单选题】The World Bank estimates______would be used to help agriculture in developing countries.
A.
$2 billion a year
B.
$2. 5 billion a year
C.
$10 billion a year
D.
$14 billion a year
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【单选题】The concern (has been) that the embryo bank (might be) exploited (by unscrupulous), or that conception might precede birth by nine or even ninety years, (rather than) by nine months.
A.
has been
B.
might be
C.
by unscrupulous
D.
rather than
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【简答题】The World Bank estimates that if we have a worldwide flu epidemic, ___________ will go down by over three trillion dollars.
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【单选题】The Cleveland Federal Reserve Bank estimates the expected inflation rate is 1.5 percent in 2013. This estimate means that
A.
the long-run and short-run Phillips curve cross at an inflation rate of 1.5 percent.
B.
the long-run Phillips curve is vertical at 1.5 percent.
C.
the short-run Phillips curve is vertical at 1.5 percent.
D.
the short-run Phillips curve shifts upward by 1.5 percentage points per year.
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相关题目：
【简答题】My brother, Henry, has an excellent job at a bank. I couldn't (1) him (2) he told me that he had decided to give it (3) . Though I tried to make him (4) his mind, I failed (5) . "You should reconsider...
查看完整题目与答案
【单选题】在中文Excel工作表的单元格中输入公式时,应先输入()号。
A.
A）’
B.
B）"
C.
C）&
D.
D）=
查看完整题目与答案
【单选题】在Excel 2002工作表的单元格中，输入和处理的数据（）。
A.
必须是文字
B.
必须是数值
C.
必须是公式
D.
以上都可以
查看完整题目与答案
【多选题】在Excel工作表的单元格中可输入（）。
A.
字符
B.
中文
C.
数字
D.
公式
查看完整题目与答案
【单选题】假如 Excel工作表的A1单元格已经输入文本'中国人民大学'，在A2单元格输入公式'=LEFT(A1,2)'，则A2单元格显示结果为( )。
A.
2
B.
中
C.
中国
D.
大学
查看完整题目与答案
【单选题】若某溶液中有Fe 2+ 、Cl - 和I - 共存，要氧化除去I - 而不影响Fe 2+ 和Cl - ，可加入的试剂是（　　）
A.
Cl 2
B.
KMnO 4
C.
FeCl 3
D.
HCl
查看完整题目与答案
【单选题】The World Bank estimates______would be used to help agriculture in developing countries.
A.
$2 billion a year
B.
$2. 5 billion a year
C.
$10 billion a year
D.
$14 billion a year
查看完整题目与答案
【单选题】The concern (has been) that the embryo bank (might be) exploited (by unscrupulous), or that conception might precede birth by nine or even ninety years, (rather than) by nine months.
A.
has been
B.
might be
C.
by unscrupulous
D.
rather than
查看完整题目与答案
【简答题】The World Bank estimates that if we have a worldwide flu epidemic, ___________ will go down by over three trillion dollars.
查看完整题目与答案
【单选题】The Cleveland Federal Reserve Bank estimates the expected inflation rate is 1.5 percent in 2013. This estimate means that
A.
the long-run and short-run Phillips curve cross at an inflation rate of 1.5 percent.
B.
the long-run Phillips curve is vertical at 1.5 percent.
C.
the short-run Phillips curve is vertical at 1.5 percent.
D.
the short-run Phillips curve shifts upward by 1.5 percentage points per year.
查看完整题目与答案
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