某地区原费用定额测算所选典型工程材料费占人工费、材料费和机械费合计的比例为30%，该地区内某施工项目的某分项工程中的材料费占人工费、材料费、机械费合计的比例为40%，该分项工程的直接工呈费为600万元，按该分项工程的直接工程费计算的间接费费率为30%，按此直接工程费和间接费计算的利润率为5%，则该分项工程的不含税造价为( )万元。
A. 819
B. 809
C. 780
D. 840
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关于上唇组织的分层，下列哪项是正确的
A. 皮肤、肌肉、粘膜三层
B. 皮肤、肌层、粘膜下组织、粘膜四层
C. 皮肤、浅筋膜、肌层、粘膜下组织、粘膜五层
D. 皮肤、浅筋膜、皮下组织、肌层、粘膜下组织、粘膜六层
E. 皮肤、粘膜二层
The writer thinks British drivers' behaviour to the misconduct of other drivers is too ______.
A. timid
B. unassertive
C. tolerant
D. aggressive
With the example of her great-grandmother, the writer ______ psychologists' definition of happiness.
A. agrees with
B. disagrees with
C. questions
D. supports
The result of Plateau's first experiment was that ______.
A. he went permanently blind
B. he stopped staring into the sun
C. he went blind for a month
D. he found what he was looking for
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