Sometime the 3-year-old child has trouble______fact from fiction.
A. separating
B. to separate
C. having separated
D. for separating
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A glimpse ______our solar system reveals the neighborhood outside the sun’s influence is stranger than expected.
A. into
B. at
C. by
D. beyond
The English writing of college students in China is generally redundant for lack of specific words.
A. ambiguous
B. wordy
C. unconvincing
D. stereotyped
In spite of the taxing business schedule, he managed to take some time off for exercise.
A. imposing
B. demanding
C. compulsory
D. temporary
下述关于消化性溃疡并发出血的叙述,正确的是
A. 胃溃疡一般比十二指肠溃疡容易发生
B. 一般出现50~100ml即可出现黑粪
C. 出血超过500ml时就可引起循环障碍
D. 半小时内出血超过1000ml时均会发生休克
E. 第一次出血后很少复发