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【简答题】
We all love chocolate , and most of us probably eat it every day , or at least several times a week.It is one of the most favourite kinds of food in the world , and many would say that they could not live without it.However , there are many facts about the world of chocolate that most people do not know. Have you ever wondered where your chocolate comes from? Most of it comes from the labor of children.It is said that in Africa alone , there are about 70 million children working on chocolate farms.They lead a very hard life , and many live only on bananas and corn paste ( 糨糊 ) . One child who was interviewed said that he was tricked into believing he would be earning money to help his family.But the truth is that he is treated like an animal.The child has never even had the chance to taste the chocolate he spends his life producing. The history of chocolate pretty much begins with the Mayans( 玛雅人 ) . Cacao( 可可 ) beans were so valuable to Mayans that they were used as money.It is said that ten beans could buy a rabbit , and one hundred beans were enough to buy a slave( 奴隶 ) . People would buy everything from food to tools with the beans.Generally , only the richer people drank chocolate regularly , because drinking your money is expensive.
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【简答题】求等比数列1,3,9,27,......的第6项
【单选题】求等比数列1,3,9,27,...的前8项和.
A.
3802
B.
3008
C.
3082
D.
3280
【简答题】求等比数列1,3,9,27,...的前n项和。
【单选题】软、未扪及胎体,未闻及胎心音。
A.
例首先考虑什么?
B.
流产
C.
宫外孕
D.
葡萄胎
E.
前置胎盘
F.
卵巢囊肿
【简答题】求等比数列的1,3,9,27,...的前8项和
【单选题】在工作面上方保持稳定的净化气流,使微粒在空气中浮动不沉降的措施称:
A.
空调净化技术
B.
层流净化技术
C.
无菌操作技术
D.
紊流净化技术
【单选题】通常花粉管进入胚囊的通道 。
A.
珠孔
B.
合点
C.
珠被
D.
中部
【单选题】通常花粉管进入胚囊的通道是( )。
A.
珠孔
B.
合点
C.
珠柄
【单选题】求等比数列1,-3,9,-27,......的前8项和.
A.
410
B.
-410
C.
820
D.
-1640
【单选题】初孕妇,26岁,妊娠32周,臀位,清晨突然发现自己躺在血泊之中,急诊入院。血压80/50mmHg,脉搏120次/分,子宫柔软,无宫缩,宫底高度符合孕周,胎体扪及清楚,胎心音闻及不清,见大量活动性阴道出血,宫颈口未扩张。下列护理措施对不恰当的是:
A.
严密观察、记录生命体征和阴道出血
B.
迅速建立静脉通道,尽快恢复正常血压
C.
协助终止妊娠
D.
做好抢救新生儿的准备
E.
立即协助进行阴道检查或肛查,彻底弄清楚出血原因
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