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【单选题】
3,5-二硝基水杨酸法是测定哪种物质的方法A.
淀粉
B.
蛋白质
C.
核酸
D.
脂肪
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反馈参考答案：
举一反三
【简答题】Complete this conversation. Use the verbs in brackets ( ) in the Present Continuous. Paul: Hi Steve! What are you doing? Steve: I’m going (I/go) to the bank. What are you doing? Paul: 1 .................
【单选题】Look, I know what it is to be a friend. I just, I screw up ! What's the proper meaning for the underlined phrase?
A.
twisted around
B.
did(a piece of work) badly and clumsily
C.
exerted pressure on
D.
overcame one
【简答题】根据内容提示完成句子（每题1分，共5分） 1. （这里一定有什么误会）. I don’t know what you’re talking about. 2. This character was a little failure but was loved for his optimism and (战胜一切困难的决心). 3. The teacher told us to (将难懂的单词划线)...
【单选题】He failed to carry out some of the provisions of the contract, and now he has to ______ the consequences.
A.
answer for
B.
run into
C.
abide by
D.
step into
【简答题】连线。 1. Do you have a computer in Canada? 2. What does Li Ming need for his letter? 3. Look! What can you see? 4. Does he know his address? 5. Can Li Ming fly a kite? A. Yes, he does. B. Yes, he can....
【简答题】Payment bonds are often required by the contract and require specific actions under the stated conditions. Payment bonds are specifically designed to ensure that the prime contractor provides payment ...
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