[简答题]必要氮损失(ONL)

[单项选择]机体必要的氮损失包括
A. 粪氮加尿氮
B. 粪代谢氮加尿氮
C. 粪氮加尿内源性氮
D. 粪代谢氮加粪氮
E. 粪代谢氮加尿内源性氮

[单项选择]必要氮损失是在哪种情况下消耗的氮量（）
A. 完全不摄入B族维生素
B. 完全不摄入脂肪
C. 完全不摄入蛋白质
D. 完全不摄入碳水化合物
E. 完全不摄入矿物质

[单项选择]There were many people present and he appeared only for a few seconds, so I only caught a （　）of him.
A. glance
B. glimpse
C. look
D. sight

[填空题]Many fishes are able to alter their coloration only to camouflage themselves.

[填空题]According to the passage, computer science can only reveal ______.

[单项选择]To sleep. Perchance to file Findings published online this week by the Proceedings of the National Academy of Sciences further support the theory that the brain organizes and stows memories formed during the day while the rest of the body is catching zzz’s.
Gyorgy Buzsaki of Rutgers University and his colleagues analyzed the brain waves of sleeping rats and mice. Specifically, they examined the electrical activity emanating from the somatosensory neocortex (an area that processes sensory information) and the hippocampus, which is a center for learning and memory. The scientists found that oscillation in brain waves from the two regions appear to be intertwined. So-called sleep spindles (bursts of activity from the neocortex) were followed tens of milliseconds later by beats in the hippocampus known as ripples. The team posits that this interplay between the two brain regions is a key step in memory consolidation.
A second study, also published online this week by the Proceedi
A. Does brain arrange memories in useful order during sleep
B. Does brain have memories when one is sleeping
C. Does brain remember files after one falls asleep
D. Does brain work on files in sleep

[填空题] The Global Economy Of all the sciences, only two are subjects that have a direct and (46) (notice) effect on our lives every day. One is meteorology, the study of wea (47) , Heat, cold, sun and rain affect us in many ways—in the kind (48) clothing we wear, for example, and the types of activities we do outdoors. Economics is the ot (49) science that affects the daily life of all of us. Each time we spend money, or it is spent on us, we are (50) (contribute) to the economic life of our country, and in fact, of the world. Most people haves basic understanding of the weather, b (51) how many people feel comfortable with the subject of economics Often, economics seems to be a mys (52) subject. Newspapers and television use terminology that can sound (53) a foreign language. They speak of the gross (54) (nation) product, the balance of payments, the cost of living, interest, productivit

[填空题]Jerry has a timetable for writing while Eileen only writes when her inspiration comes.