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【单选题】
泡沫具有（ ）结构A.
单分子膜
B.
双分子膜
C.
多分子膜
D.
无膜
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【简答题】Complete the following sentences with the adjectives below. essential;specific; nonexistent;acceptable;tasteful;controversial;minimal;proper 1.Good food and plenty of exercise are____to a healthy lif...
【简答题】essential;specific;nonexistent;acceptable;tasteful;controversial;minimal;proper Good food and plenty of exercise are _________ to a healthy life. This is a that is suitable for ____________ age g...
【单选题】The technique is being tried in classrooms to assess what effects it may have.Choose a word from A, B, C, and D, which can best replace the underlined word in this sentence.
A.
calculate
B.
count
C.
impose
D.
estimate
【单选题】This is a tried and true way of saving water.
A.
assonance
B.
consonance
C.
alliteration
【简答题】essential specific non-existent acceptable tasteful controversial minimal proper Good food and plenty of exercise are _______ to a healthey life. This is a that is suitable for _____...
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