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【单选题】
Cuttlefish are intriguing little animals. The cut tlefish resembles a rather large squid and is, like the octopus, a member of the order of cephalopods. Although they are not considered the most highly evolved of the cephalopods, they are extremely intelligent. While observing them, it is hard to tell who is doing the observing, you or the cuttlefish, especially since the eye of the cuttlefish is similar in structure to the human eye. Cuttlefish are also highly mobile and fast creatures. They come equipped with a small jet located just below the tentacles that can expel water to help them move. Ribbons of flexible fins on each side of the body allow cuttlefish to hover, move, stop, and start. _____________________________________. The cuttlefish is sometimes referred to as the “chameleon of the sea” because it can change its skin color and pattern instantaneously. Masters of camouflage, they can blend into any environ ment for protection, but they are also capable of the most imaginative displays of iridescent, bril liant color and intricate designs, which scientists believe they use for communication and for mat ing displays. However, judging from the riot of ornaments and hues cuttlefish produce, it is hard not to believe they paint themselves so beautifully just for the sheer joy of it. At the very least, cut tlefish conversation must be the most sparkling in all the sea.Which of the following best outlines the main topics addressed in the passage? a. I. Explanation of why cuttlefish are intriguing II. Communication skills of cuttlefish b. I. Classification and difficulties of observing cuttlefish II. Scientific explanation of modes of cuttlefish communication c. I. Explanation of the cuttlefish’s method of locomotion II. Description of color displays in mating behavior d. I. General classification and characteristics of cuttlefish II. Uses and beauty of the cuttlefish’s ability to change color
A.
I. Explanation of why cuttlefish are intriguing II. Communication skills of cuttlefish
B.
I. Classification and difficulties of observing cuttlefish II. Scientific explanation of modes of cuttlefish communication
C.
I. Explanation of the cuttlefish’s method of locomotion II. Description of color displays in mating behavior
D.
I. General classification and characteristics of cuttlefish II. Uses and beauty of the cuttlefish’s ability to change color
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【多选题】翻译得到的产物叫( )
A.
mRNA
B.
r R NA
C.
蛋白质
D.
基因表达的产物
E.
DNA
【单选题】肝硬化失代偿期最突出的表现是
A.
腹水
B.
低热
C.
腹泻
D.
出血倾向
E.
内分泌失调
【单选题】下列不属于热光源的是
A.
白炽灯
B.
卤钨灯
C.
萤火虫
D.
太阳
【单选题】心悸伴晕厥或抽搐最常见于
A.
I度窦房传导阻滞
B.
心室颤动或阵发性室性心动过速
C.
甲状腺功能亢进
D.
心脏神经官能症
E.
急性失血
【单选题】下列不属于光源的是( )
A.
太阳
B.
月亮
C.
火焰
D.
白炽灯
【单选题】下列不属于光源依据光谱组成分类的是( )。
A.
连续光谱
B.
线状光谱
C.
可见光谱
D.
混合光谱
【单选题】下列不属于人工光源 的是
A.
火焰光源
B.
电光源
C.
萤火虫光
D.
LED 电致发光源
【简答题】工作分析的定性方法有:()()()()()
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