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【多选题】
下列对于有机高分子化合物的认识不正确的是 [     ]
A.
有机高分子化合物称为聚合物或高聚物,是因为它们大部分是由小分子通过聚合反应而得到的
B.
有机高分子化合物的相对分子质量很大,因而其结构很复杂
C.
对一块高分子材料来说,n是一个整数值,因而它的相对分子质量是确定的
D.
高分子材料可分为天然高分子材料和合成高分子材料两大类
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举一反三
【多选题】What does the word “charity” mean to you?
A.
Providing help or relief to the poor and needy.
B.
Benevolence or generosity toward others and toward humanity.
C.
An organization that facilitates charity benefiting people in need.
D.
The act of giving our money, time or resources to others without expecting a reciprocation or a direct return.
【简答题】Mary realized she _______A. was playing o joke about B. was fun C. was being made fun of D. was made fun
【简答题】Word Bank idiom n. flog v. 鞭打 skeleton n. 骨骼
【单选题】Mary realized she _________.
A.
was making fun of
B.
was made fun
C.
was being made fun of
D.
was being made fun
【多选题】股票指数期货交易的特点有( )。
A.
以现金交收和结算
B.
以小博大
C.
套期保值
D.
投机
【单选题】It was only after she had read the papers _______ Mary realized the homework before her was extremely difficult to complete.
A.
when
B.
that
C.
which
D.
what
【单选题】When Mary was in hospital, the couple realized that______.
A.
they had to put their plan into practice
B.
health was more important than wealth
C.
heart trouble was a serious illness
D.
they both needed to stop working
【判断题】晶体管电压调节器具有重量轻、体积小、寿命长、可靠性高和工作不产生火花的优点,但调节精度不高。()
A.
正确
B.
错误
【简答题】Word Bank return n. 利润;收益 vocational a. 职业的 mismatch n. 不匹配
【单选题】Mary realized she ____________.
A.
Was playing a joke about
B.
Was making fun
C.
Was being made fun of
D.
Was made fun
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