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【单选题】
Eta Carinae is hard to observe becauseA.
it is too far away.
B.
there is too much dust and gas around it.
C.
the binoculars are not powerful enough.
D.
it does not send out infrared light.
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举一反三
【单选题】“ 人总是要死的” 谓词公式表示为 。（论域为全总个体域） M(x) ： x是人；Mortal(x) ：x 是要死的。
A.
M(x) →Mortal(x)
B.
M(x)∧Mortal(x)
C.
(∀ x) (M (x)→Mortal(x))
D.
(∃ x) (M (x)∧Mortal(x))
【单选题】某中外合资家电生产企业，2009年销售产品取得不含税收入2500万元，会计利润600万元，已预缴所得税150万元。经税务师事务所审核，发现以下问题：
（1）期间费用中广告费450万元、业务招待费15万元、研究开发费用20万元；
（2）营业外支出50万元（含通过公益性社会团体向贫困山区捐款30万元，直接捐赠6万元）；
（3）计入成本、费用中的实发工资总额150万元、拨缴职工工会经费3万元...
A.
6
B.
6.26
C.
19.25
D.
16.27
【单选题】I loved that they accepted me for my socially awkward self.(Para. 5)
A.
I loved that my colleagues never made me feel uncomfortable in social settings.
B.
I loved that my colleagues accepted me although I was not good at socializing.
【单选题】Q4. How long has the company been in operation?
A.
50 years.
B.
15 years.
C.
5 years.
D.
25 years.
【单选题】How long had Valentine been executed when Lupercalia was renamed?
A.
270 years.
B.
496 years.
C.
226 years.
D.
220 years.
【单选题】I loved that they accepted me for my socially awkward self.(Para.5)
A.
I loved that my colleagues never made me feel uncomfortable in social settings.
B.
I loved that my colleagues accepted me although I was not good at socializing.
C.
null
D.
nul
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