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【单选题】
塑化剂是一种化工原料，属于致癌物，不能用于食品添加剂．其最常见的品种是DEHP．下列关于DEHP（化学式为C 24 H 38 O 4 ）的说法正确的是（ ）A.
属于无机物
B.
碳元素的质量分数约为73.8%
C.
碳、氢、氧三种元素质量比为24：38：4
D.
完全燃烧后生成水和二氧化碳分子的个数比为19：12
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【单选题】There are _____ products to be sold in the factory store. Which is not correct in the following? [ ]
A.
a large number of
B.
quantities of
C.
a large amount of
D.
a great many
【单选题】After a new reform, the number of the products in the factory is now ______ it was in 2003. [ ]
A.
three times as larger as
B.
more than three times
C.
twice as large as
D.
as twice large as
【简答题】The manager assured the customer that his complaint would be soon seen ______.
【单选题】The manager assured the customer that his complaint would be seen ______ immediately.
A.
to
B.
on
C.
at
D.
with
【单选题】Products made in this factory ____ well; they have sold ___all their products.
A.
sell; out
B.
are sold; over
C.
sell; off
D.
are sold; away
【简答题】__________ makes products in the factory.
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