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【单选题】
胡萝卜素提取过程中 , 下列对材料的处理正确的是 ( ) A. 胡萝卜要放置几天后再做实验 B. 烘干胡萝卜时 , 温度越高越好 C. 为充分干燥胡萝卜 , 故干燥时间越长越好 D. 要把烘干的胡萝卜粉碎备用A.
B.
C.
D.
D
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【单选题】He() himself on the back for he was the only one to pass the exam.
A.
patted
B.
past
C.
passed
D.
put
【简答题】One can do a mail merger only after he___________.
【简答题】He is the only one of the students who __________ finished the task in time. A) is B) are C) have D) has
【简答题】He is one of the boys who ______ here on time. He is the only one of the boys who ______here on time. A) has come; have come B) have come; has come C) has come; has come ...
【单选题】He is one of the teachers who _____ English but the only one of the teachers who _____ French in our school.
A.
know … knows
B.
knows … know
C.
knows… knows
D.
know … know
【简答题】He ______ (have) little chance of getting the job unless he is the only one to apply for the job.
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