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【单选题】
— Should I look up each word that I don’t understand? — No, turn to your dictionary only when _____.A.
you are necessary
B.
you need
C.
necessary
D.
you are needed
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反馈参考答案：
举一反三
【简答题】胆固醇的概念?
【单选题】Can you tell me ______ to join the army?
A.
how does a person have to be old
B.
how old does a person have to be
C.
how old a person has to be
D.
how a person has to be
【简答题】N. Person with old-fashioned ideas
【单选题】下列哪种说法符合胆固醇的概念( )
A.
胆固醇易溶于水
B.
胆固醇也会产生酸败作用
C.
分子中C 17 有羟基
D.
它是体内多种活性物质合成的原料
E.
以上都不是
【单选题】What the element “--es” indicates is third person singular. Present tense. The element “--ed” past tense, and “-ing” progressive aspect. Since they are the smallest unit of language and meaningful. Th...
A.
phonemes
B.
morphemes
C.
allophones
D.
phones
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