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【简答题】
人体的基本组织有四大类，即[填空(1)]、[填空(2)]、[填空（3）]和[填空(4)]
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皮皮学刷刷变学霸
举一反三
【单选题】- Where is Miss Smith? - _________
A.
She's from England.
B.
She's at home.
C.
She's not back.
D.
She's very well.
【单选题】化学与生活密切相关，下列相关叙述中正确的是 [ ]
A.
胃酸过多的病人应少吃柠檬
B.
食品添加剂都对健康有害，应禁止使用
C.
人体缺钙会引起骨质疏松症，因此钙元素摄入得越多越好
D.
金针菇外观发黄，为了使其白净美观，用甲醛浸泡
【单选题】-----Hello, come in． ． -----Thank you．
A.
All right
B.
Make yourself at home
C.
That’s my home
D.
It’s a great honor
【简答题】（7分）化学与我们生活密切相关，请根据题意回答： （1）大米发霉了是绝对不能食用的。被霉菌污染后的大米，会产生致癌毒草素——黄曲霉菌素。有一种黄曲霉素B1的化学式是: C 17 H 12 O 6 ，它的相对分子质量是 ， 该物质由 种元素组成，各元素的质量比是 。 （2）钠米材料氧化铝（铝元素为+3价）的化学式为 ，足球烯碳60的化学式为 。 （3）维生素C广泛存在于蔬菜水果中，人体缺乏维生素C会...
【简答题】A．She's rarely home. B．She spends a lot of time on the phone. C．She's been away for several days. D．She makes calls only when necessary.
【单选题】—_______? —She's staying at home. [ ]
A.
Where is she
B.
What is she doing this weekend
C.
Where are you going
D.
How long is Lily staying at home
【单选题】---She’s seldom asked to do housework at home, she? --- . Her parents are very busy with their work, so she has to do the laundry every day.
A.
has; Yes
B.
hasn’t; No
C.
is; Yes
D.
isn’t; No
【简答题】I’ll see ___ she’s at home ___not at home. A、either ⋯ or B 、neither ⋯nor C、whether ⋯or D、if ⋯or
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