The article is most possibly taken from ______.
A. an encyclopedia,
B. a report in a newspaper.
C. a periodical on terminology standardization.
D. a policemen guide.
查看答案
砷化合物的中毒机制是
A. 抑制巯基酶
B. 抑制细胞色素氧化酶
C. 抑制胆碱酯酶
D. 抑制环化加氧酶
E. 抑制过氧化物酶
What was the rule implied by the trail of the commander of the guards
A soldier must obey lawful orders, be he right or wrong.
B. Even if an order is unlawful, the soldier must still obey it.
C. A soldier may or must disobey unlawful orders or he must die.
D. It is the soldier's duty to obey superior orders whatever they are.
______ you are proven innocent, you can shake off all the shadows cast on you.
A. While
B. Even though
C. Now that
D. For
What can we learn from today's youth
A. They are more pessimistic than we think.
B. About four out of five young people are satisfied with their family life.
C. They work much harder than before.
D. They are not very confident about their future and the society.
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