I warned him to keep the matter confidential.
A. private
B. safe
C. personal
D. secret
查看答案
A) so C) quiteB) very D) much too
A. so
B. very
C. quite
D. much too
A) classified C) reachedB) viewed D) observed
A. classified
B. viewed
C. reached
D. observed
环境污染对人群健康的影响主要是( )
A. 慢性中毒、三致作用
B. 生物因子、物理因子
C. 化学因子、生物因子
D. 急慢性中毒、三致作用
E. 物理因子、化学因子、生物因子
In the first paragraph, we are told that______.
A. we should always read good books, not bad ones
B. happiness can be derived only from reading
C. enjoyment and satisfaction can be achieved by reading good books
D. reading increases our contentment when we are cheerful, and lessens our troubles when we are sad
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