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【单选题】
食品中可能出现的有害因素主要包括（ ）A.
生物性污染、化学性污染、物理性污染
B.
有机物污染、化学性污染、物理性污染
C.
无机物污染、化学性污染、物理性污染
D.
放射性污染、生物性污染、环境污染
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皮皮学刷刷变学霸
举一反三
【单选题】The students should take the exams__________ .
A.
serious
B.
seriously
C.
bad
D.
worse
【简答题】The Said Business School thinks their students should take course of various subjects so that they could create ______ over others.
【简答题】University students should take a broader course of study.
【单选题】When it came to the topic whether students should take cell phones to school, nearly every student ___________ the discussion.
A.
joined
B.
attended
C.
joined in
D.
took part in
【简答题】Write about the following topic: Some people think that students should take subjects as decided by the government. Other people think that students should be allowed to take the subjects they prefer....
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