菠菜中含有(),会与钙结合形成不溶性的沉淀。烹饪时可先将菠菜在沸水中焯1分钟捞出,降

题型:单项选择题

问题:

菠菜中含有(),会与钙结合形成不溶性的沉淀。烹饪时可先将菠菜在沸水中焯1分钟捞出,降低该物质的含量。

A.叶酸

B.维生素K

C.β胡萝卜素

D.草酸

考点:食品安全知识竞赛食品安全知识竞赛题库
题型:单项选择题

Mr. and Mrs. Long had one daughter. Her name was Lena. She was eighteen years old. Lena lived with her parents and worked in an office. She had some friends, but she didn’t like any of the boys very much.

One day she met a very nice man. He was young. His name was Watts and he worked in a post office. They became friends and he came to Lena’s parents house twice. Last week Lena said to her father, “I’m going to marry(嫁给) Watts, Daddy. He was here yesterday.”

“Oh, yes.” her father answered. “He’s a nice boy, but has he got much money?”

  “Oh, no, both of you are the same,” the daughter answered angrily. I met Watts on the first day of June and the next day he asked me, “Has your father got much money?”

小题1:Mr. and Mrs. Long had a ______.

      

A.son

B.grandson

C.daughter

D.granddaughter小题2:Lena worked _________.

      

A.in a school

B.in an office

C.in a factory

D.in a hospital小题3:Lena had a few friends before she came to know Watts, but she _____.

     

A.liked no one very much

B.like all of them

  

C.didn’t know their names

D.didn’t talk to them about their work小题4:Last week Lena asked her father _______.

A.to help her find a good husband

B.to let her marry(嫁给) Watts

C.to give her some money to buy a house

D.to let her work in a big city小题5:Lena got angry because ______.

       

A.her father didn’t like her boyfriend, Watts

  

B.her father asked her to make friends with money

 

C.her father and Watts only thought of money

  

D.her parents asked Watts to give them too much money

题型:单项选择题

支票是出票人签发的,委托办理支票存款业务的银行在见票时无条件支付确定的金额给收款人或持票人的票据,不能用于支取现金的支票是( )。

A.现金支票

B.转账支票

C.普通支票

D.旅行支票

题型:单项选择题

—Could you tell me __________?

—Sorry, I don’t know.

A.how can I get to the Water Sports Center

B.when will Mr. Black come back

C.why is Tom late for class

D.where Mr. Green has gone

题型:单项选择题

某同学用如图装置制备并检验Cl2的性质.下列说法正确的是

(  )

A.I图中:如果MnO2过量,浓盐酸就可全部消耗

B.II图中:充分光照后,量筒中剩余气体约10mL(条件相同)

C.III图中:生成蓝色的烟,若在集气瓶中加入少量水,溶液呈绿色

D.IV图中:干燥的有色布条不退色,湿润的有色布条能退色,说明Cl2有漂白性

题型:单项选择题

口腔颌面部鳞状细胞癌发病率最高的部位()

A.舌

B.唇

C.牙龈

D.腭

E.口底

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