皮皮学,免费搜题
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搜题
【多选题】
安全用电应注意哪几点?
A.
不要超负荷用电
B.
选用与电器设备相匹配的保险丝
C.
不用湿手摸、擦灯具
D.
插座必须完好无缺
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举一反三
【单选题】水通过()的作用可与另外4个水分子配位结合形成正四面体结构。
A.
氢键
B.
范德华力
C.
盐键
D.
二硫键
【单选题】水通过()的作用可与另外4个水分子配位结合形成正四面体结构。
A.
氢键
B.
二硫键
C.
盐键
D.
范德华力
【单选题】水通过()的作用可与另外4个水分子配位结合形成正四面体结构。
A.
二硫键
B.
盐键
C.
氢键
D.
范德华力
【简答题】Fill in the blank in each sentence with a word or phrase taken from the box.
【单选题】水通过( )的作用可与另外( )个水分子配位结合形成正四面体结构。
A.
二硫键,1
B.
范德华力, 2
C.
离子键,3
D.
氢键,4
【简答题】Make the correct choice to fill in the blank in each sentence.
【单选题】Which word is the best to fill in the blank in the last paragraph?
A.
interesting.
B.
difficult.
C.
strange.
D.
wonderful
【单选题】Fill in the blank in each sentence with a word or phrase taken from the given words in appropriate form.
A.
hool trips give children _______experience not available in the classroom.
B.
cope with
C.
life-changing
D.
invest
E.
embracing
F.
benefit from
G.
first-hand
H.
reflect
I.
encounter
J.
acquisition K. routine
【简答题】Fill in the blank in each sentence in Group 1 with a word taken from Group 2.
【单选题】Fill in the blank in each sentence with a word or phrase taken from the given words in appropriate form.
A.
cond language _______ is the most important part in language learning.
B.
cope with
C.
life-changing
D.
invest
E.
embracing
F.
benefit from
G.
first-hand
H.
reflect
I.
encounter
J.
acquisition K. routine
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