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【单选题】
《浑仪注》中提到“浑天如鸡子。天体圆如弹丸,地如鸡子中黄,孤居于天内,天大而地小。天表里有水,天之包地,犹壳之裹黄。”书中描述的宇宙模型是( )A.
浑天说
B.
盖天说
C.
宣夜说
D.
大象说
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皮皮学刷刷变学霸
举一反三
【单选题】The author mentions the example of 'backpacks'(Line 4, Para. 2) to show the importance of______.
A.
pleasing the young as well as the old
B.
increasing usage among students
C.
exploring new market sections
D.
serving both military and civil needs
【简答题】最常见的光敏化剂有：（）、（）。
【简答题】油脂光敏氧化最常见的光敏化剂有:______、______。
【简答题】新陈代谢(metabolism)
【单选题】下列关于新陈代谢的叙述，错误的是 [ ]
A.
新陈代谢包括合成代谢和分解代谢
B.
先有物质合成，后有物质分解
C.
人体内时刻以新合成的物质取代原有的物质
D.
物质代谢总是伴随着能量代谢
【单选题】What does the example of New Jersey (Para. 4) illustrate?
A.
Schools in rich districts are usually choosy.
C.
Official sources are careful on the success of AC. C. New Jersey has more need for teachers than elsewhere.
D.
AC has turned out good teachers for schools.
【单选题】The author gives an example of a woman in Para. 5. What kind of relationship between the hostess and the Roomba does that example support?
A.
A woman and her secret lover.
B.
A mother and a competent helper.
C.
The master and the household appliance.
【单选题】What does the example of New Jersey (Para. 4) illustrate?
A.
Schools in rich districts are usually choosy.
B.
Official sources are careful on the success of A C.
C.
New Jersey has more need for teachers than elsewhere.
D.
AC has turned out good teachers for schools
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