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【单选题】
命题“在△ABC中，若sinA= 1 2 ，则A=30°”的否命题是（ ）A.
在△ABC中，若sinA= 1 2 ，则A≠30°
B.
在△ABC中，若sinA≠ 1 2 ，则A=30°
C.
在△ABC中，若 sinA≠ 1 2 ，则A≠30°
D.
在△ABC中，若A≠30°，则sinA≠ 1 2
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举一反三
【单选题】American colleges and universities failed to graduate haft of their four-year degree candidates because ______.
A.
most of them lack high-quality faculties
B.
students are becoming more and more lazy
C.
there are not enough incentives for students to study hard
D.
they attach greater importance to research and publication than to teaching
【单选题】It takes a while, as you walk around the streets of Nantes, a city of haft a million people on the banks of the Loire River, to realize just what it is that is odd. Then you get it: there are empty pa...
A.
Nantes is with the best traffic condition in France.
B.
Nantes used to be crowded with cars.
C.
The government of Nantes is the first to dissuade people from driving into town.
D.
The government of Nantes succeeds in raising people's living standard.
【多选题】以下关于“统一”形式美法则的描述中,正确的是哪些
A.
通常视觉心理上寻求均齐和平衡
B.
通常在视觉要素中找寻一致性和联系
C.
常用渐变、循环、连续等视觉表现方式
D.
常用强调、韵律、简化等视觉表现方式
【单选题】The course normally attracts 20 students per year, ______ up to haft will be from orient.
A.
in which
B.
for whom
C.
with which
D.
of whom
【简答题】All workers must be at their ______ by haft past eight, A) job B) post C) work D) profession
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