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【单选题】
关于天然药物有效成分,下列说法正确的是()A.
有效成分是指药材中含量最高的成分
B.
多糖、蛋白质、叶绿素等均需作为无效成分除掉
C.
是指具有某种生物活性或治疗作用的成分，其含量可能不高。
D.
一种中药材中只有一种有效成分，其它成分均需做为杂质除去
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【单选题】—Americans ___forks and knives to chopsticks while Chinese people ___use chopsticks. —Different cultures make it.
A.
would rather; prefer
B.
prefer; would rather
C.
would rather; would rather
D.
prefer; prefer
【单选题】---Americans ____forks and knives to chopsticks while Chinese people ______use chopsticks. -----Different cultures makes it.
A.
would rather;prefer
B.
prefer;would rather
C.
would rather;would rather
D.
prefer;prefer
【多选题】下列关于城镇土地使用税的说法，正确的是( )。
A.
城镇土地使用税的计税依据是纳税人实际占用的土地面积
B.
城镇土地使用税根据不同地区和各地经济发展状况实行等级幅度税额标准，中等城市每平方米每年1．50～30．00元
C.
经过省级人民政府批准，经济落后地区的税额标准可以适当降低，经济发达地区的税额标准可以适当提高
D.
城镇土地使用税按年征收、分期缴纳
E.
城镇土地使用税的应纳税额=纳税人实际占用的土地面积×适用税额标准
【简答题】将下列单词归类，将序号填在相应横线上。 A. chopsticks B. milk C. hamburger D. tea E. knife F. bread G. spoon H. coffee I. cake J. fork K. hot dog L. water 1. 餐具: __________________________________...
【单选题】This pair of chopsticks ______ mine, and my chopsticks ______ on the plate. [ ]
A.
isn't, is
B.
aren't are
C.
aren't, is
D.
isn't, are
【多选题】What are the taboos about using chopsticks?
A.
Don't stick your chopsticks upright in the rice bowl.
B.
Don't tap on your bowl with your chopsticks.
C.
Don't suck the ends of your chopsticks.
D.
Don't point at others with your chopsticks.
【单选题】Which of the following statements is wrong about chopsticks? ______
A.
Chopsticks have their beginning in China, which is a great invention of Han people.
B.
In ancient China, chopsticks were called zhu.
C.
There is a history of at least eight thousand years to eat with chopsticks in China.
D.
Chopsticks were first mentioned in Liji ( The Book of Rites ).
【多选题】What types of chopsticks are mentioned in this video?
A.
Ivory chopsticks.
B.
Wood or bamboo chopsticks.
C.
Bronze chopsticks.
D.
Lacquer chopsticks.
E.
Gold and silver chopsticks.
F.
Porcelain and plastic chopsticks.
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