【单选题】【消耗次数：1】
食物发生腐败变质的最主要原因是（）
①
A、微生物污染
②
B、农药残留
③
C、加工方法不合理
④
D、没有分类存放
参考答案：
复制
纠错
相关题目
随机题目
【单选题】
5. -What is a writing brush, do you know? -It’s _______ writing and drawing.
①
with
②
to
③
for
④
by
【单选题】
11. -Will the foreigners have any problems talking with Chinese in 2008? -I don’t think so. Now ______ the young ______ the old can speak some English.
①
either…or
②
not only… but also
③
neither…nor
④
both…or
【单选题】
8. Hong Kong is ______ the south of China, and Macao is ______ the west of Hong Kong.
①
in;to
②
to; to
③
to; in
④
in; in
【单选题】
20. ______ you can’t answer this question, we have to ask someone else for help.
①
Although
②
While
③
Whether
④
Since
【单选题】
4. Jack has studied Chinese in this school _______ the year of 2000.
①
since
②
in
③
on
④
by
【单选题】
14. I won’t believe that the five-year-old boy can read five thousand words ______ I have tested him myself.
①
after
②
when
③
if
④
until
【单选题】
1. We traveled overnight to Paris and arrived _______ 5 o’clock ______ the morning.
①
on; in
②
at; in
③
on
④
on
【单选题】
18. The mountain was ______ steep _____ few people in our city reached the top.
①
so…as
②
so…that
③
as…as
④
too…to
【单选题】
18. He ______ listen to pop music, but now he ______dancing.
①
is used to; used to
②
used to; is used to
③
used to; is used for
④
is used for; used to