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【单选题】
在下列4个命题中,是真命题的序号为(  ) ①3≥3; ②100或50是10的倍数; ③有两个角是锐角的三角形是锐角三角形; ④等腰三角形至少有两个内角相等.
A.
B.
①②
C.
①②③
D.
①②④
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举一反三
【单选题】There’s another way to survive this competition -- a way no one ever seems to tell you about, _____ you have to learn for yourself.
A.
one
B.
it
C.
that
D.
another
【判断题】多色染色时先染深色再染浅色。()A. 对 B. 错
A.
正确
B.
错误
【单选题】There is another way to survive this competition-a way no one ever seems to tell you about, ________ you have to learn for yourself. [     ]
A.
it
B.
that
C.
one
D.
another
【判断题】多色染色时先染深色再染浅色
A.
正确
B.
错误
【简答题】翻译:one-way valve
【判断题】多色染色时先染深色再染浅色。
A.
正确
B.
错误
【简答题】翻译以下短语并完成句子。 1. in one way ____ 2. in no way ____ 3. in the way ____ 4. by the way____ 5. on the way ____ 6. give way to____ 7. in this way___ 8. The work is well done ____. 从某种程度上说,这工作做得不错. 9.  Her s...
【单选题】work one's way to
A.
achieve sth. gradually by working
B.
walk down
C.
make one's way
D.
plow through
【多选题】工厂设计中要时时刻刻考虑到国情,此外还要考虑的因素有哪些?
A.
经济效益
B.
劳动保护
C.
环境保护
【判断题】高分子材料的老化大多为介质向材料内部渗透扩散引起
A.
正确
B.
错误
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