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【单选题】
职业性有害因素是指A.
生产工艺过程中存在的有害健康的各种职业因素
B.
不良劳动条件下存在的所有职业因素
C.
生产环境中存在的有害健康的职业因素
D.
劳动过程中所有能对健康产生不良影响的职业因素
E.
生产过程、劳动过程和生产环境中存在的直接危害劳动者健康的因素
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【单选题】Children are advised to _________ their food carefully in their childhood. .
A.
chew
B.
digest
C.
swallow
【单选题】Parents are advised to put books __________ they are easily accessible to children .
A.
which
B.
where
C.
in which
D.
who
【简答题】What does “Pacific Century” refer to?
【简答题】In America, most people don’t get enough sleep. Children aged 5 to 12 are advised to sleep 10 to 11 hours every night, but most of them can’t sleep that long. A study found that about 41 million Ameri...
【单选题】If children have flulike symptoms, their parents ______.
A.
are advised not to give them aspirin
B.
should watch out for signs of Reye syndrome
C.
are encouraged to take them to hospital for vaccination
D.
should prevent them from mixing with people running a fever
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